diff --git a/scss/layout/_scrollbar.scss b/scss/layout/_scrollbar.scss
index 5e555d14..e51503e6 100644
--- a/scss/layout/_scrollbar.scss
+++ b/scss/layout/_scrollbar.scss
@@ -46,17 +46,6 @@
   }
 }
 
-#monkey_scroll_wrapper_for_channels_scroller {
-  .monkey_scroll_bar {
-    background: $color-shade-mid;
-  }
-
-  .monkey_scroll_handle_inner {
-    background: $color-shade-light;
-    border: 3px solid $color-base;
-  }
-}
-
 .c-scrollbar--monkey .c-scrollbar {
   &__track {
     background: $color-shade-mid;
diff --git a/scss/layout/_sidebar.scss b/scss/layout/_sidebar.scss
index b161c480..1ed39467 100644
--- a/scss/layout/_sidebar.scss
+++ b/scss/layout/_sidebar.scss
@@ -7,10 +7,6 @@
   color: $base-font-color;
 }
 
-#col_channels_collapse_view {
-  background: $color-shade-dark;
-}
-
 .p-channel_sidebar {
   background-color: $color-shade-dark;
   color: $base-font-color;
@@ -171,137 +167,6 @@
   }
 }
 
-.channels_list_new_btn {
-  color: $base-link-color;
-}
-
-.list_more {
-  border-bottom: 1px dotted $base-link-color;
-  color: $base-link-color !important;
-
-  &:hover {
-    border-bottom: 1px solid $base-link-color-active;
-    color: $base-link-color-active !important;
-  }
-}
-
-#channels_scroller {
-  &.show_which_channel_is_active ul li.active {
-    .primary_action {
-      background: $color-base;
-      color: $base-font-color;
-
-      &.im_name .im_name_background,
-      &.im_name > *:not(.unread_highlights) {
-        background: $color-base;
-      }
-
-      &.feature_user_custom_status .im_name_background {
-        background: $color-base;
-      }
-
-      .prefix {
-        color: $color-highlight;
-      }
-    }
-
-    .group_close,
-    .im_close,
-    .mpim_close {
-      color: $base-font-color;
-    }
-
-    .unread_highlights,
-    .unread_msgs {
-      background: $color-red;
-      color: $base-font-color;
-    }
-  }
-
-  ul li.muted_channel:not(.active) .primary_action>:not(.im_name_background),
-  &:not(.show_which_channel_is_active) li.muted_channel .primary_action>:not(.im_name_background) {
-    opacity: 0.6;
-  }
-}
-
-#channel_scroll_down,
-#channel_scroll_up {
-  background: $color-shade-darkest;
-  color: $base-font-color;
-  text-shadow: 0 1px 1px $color-shadow-light;
-}
-
-#channel_scroll_down {
-  &:hover {
-    color: $base-font-color;
-  }
-
-  &.unseen_have_mentions {
-    background: $color-red;
-  }
-}
-
-#channel_scroll_up {
-  &.unseen_have_mentions {
-    background: $color-red;
-  }
-}
-
-#channel_scroll_up:hover {
-  color: $base-font-color;
-}
-
-#list_controls {
-  border-bottom: 1px solid $color-shade-dark;
-  color: $color-highlight;
-}
-
-#list_search {
-  border: 1px solid $color-shade-dark;
-}
-
-#list_search_container {
-  .icon_search {
-    color: $color-highlight;
-  }
-
-  .icon_close {
-    color: $color-highlight;
-  }
-}
-
-#list_browser {
-  p.highlighted {
-    background: $color-base;
-  }
-
-  &:not(.keyboard_active) p:hover {
-    background: $color-base;
-  }
-
-  .item_creator {
-    color: $color-highlight;
-  }
-
-  .item_count {
-    color: $base-font-color;
-  }
-
-  .item_purpose {
-    color: $base-font-color;
-  }
-}
-
-#list_browser_dialog {
-  .modal-footer a {
-    color: $base-link-color;
-
-    &:hover {
-      color: $base-link-color-active;
-    }
-  }
-}
-
 #channel_list_invites_link {
   border-bottom: 1px dotted $base-link-color;
   color: $base-link-color !important;
@@ -332,17 +197,9 @@
     #quick_switcher_label {
       color: $base-link-color;
     }
-
-    #quick_switcher_shortcut {
-      color: $base-link-color;
-    }
   }
 }
 
-#quick_switcher_shortcut {
-  color: $color-highlight;
-}
-
 #quick_switcher_label {
   color: $color-highlight;
 }
diff --git a/scss/modules/_loader.scss b/scss/modules/_loader.scss
index 3f12f5b5..ebd8d8b9 100644
--- a/scss/modules/_loader.scss
+++ b/scss/modules/_loader.scss
@@ -18,26 +18,12 @@
   }
 }
 
-#col_channels_bg {
-  background: $color-base;
-}
-
 #loading_team_menu_bg,
 #loading_user_menu_bg {
   background: $color-base;
   border: none;
 }
 
-#loading_message_spinner {
-  background-image: none;
-  width: auto;
-
-  &::after {
-    color: $color-highlight;
-    content: "Loading...";
-  }
-}
-
 .infinite_spinner_bg,
 .infinite_spinner_blue {
   stroke: $base-font-color;
diff --git a/scss/modules/flexpane/_files.scss b/scss/modules/flexpane/_files.scss
index da9b9604..c5b0450e 100644
--- a/scss/modules/flexpane/_files.scss
+++ b/scss/modules/flexpane/_files.scss
@@ -11,14 +11,6 @@
   }
 }
 
-#primary_file_button {
-  color: $color-highlight !important;
-
-  &:hover {
-    color: $base-font-color !important;
-  }
-}
-
 .file_list_item .icon,
 .file_reference .icon {
   background: $color-shade-lightest;
diff --git a/scss/modules/flexpane/_team.scss b/scss/modules/flexpane/_team.scss
index db7be912..96dee53d 100644
--- a/scss/modules/flexpane/_team.scss
+++ b/scss/modules/flexpane/_team.scss
@@ -51,18 +51,34 @@
   }
 }
 
-#member_preview_scroller,
-#member_preview_web_container {
+#member_preview_scroller {
   background-color: $color-shade-dark;
-}
 
-#team_tab {
-  #member_preview_scroller,
-  #member_preview_web_container {
-    background-color: $color-base;
+  .member_data_table .current_status_cell {
+    .current_status_container {
+      .current_status_cover {
+        &:hover {
+          border-color: $color-shade-dark;
+        }
+      }
+
+      &:not(.active) {
+        .current_status_cover {
+          &.without_status_set {
+            .current_status_placeholder {
+              color: rgba($base-font-color, 0.35) !important;
+            }
+          }
+        }
+      }
+    }
   }
 }
 
+#team_tab #member_preview_scroller {
+  background-color: $color-base;
+}
+
 #member_preview_scroller,
 #member_preview_web_container,
 .menu_member_header {
@@ -150,23 +166,3 @@
     background: $color-shade-light;
   }
 }
-
-#member_preview_scroller .member_data_table .current_status_cell {
-  .current_status_container {
-    .current_status_cover {
-      &:hover {
-        border-color: $color-shade-dark;
-      }
-    }
-
-    &:not(.active) {
-      .current_status_cover {
-        &.without_status_set {
-          .current_status_placeholder {
-            color: rgba($base-font-color, 0.35) !important;
-          }
-        }
-      }
-    }
-  }
-}
diff --git a/scss/modules/flexpane/_whats-new.scss b/scss/modules/flexpane/_whats-new.scss
index 54015d8a..c0c3d659 100644
--- a/scss/modules/flexpane/_whats-new.scss
+++ b/scss/modules/flexpane/_whats-new.scss
@@ -7,9 +7,3 @@
     color: $color-highlight;
   }
 }
-
-#whats_new_updates {
-  h3 a {
-    color: $base-font-color !important;
-  }
-}
diff --git a/scss/modules/header/_banners.scss b/scss/modules/header/_banners.scss
deleted file mode 100644
index 4e85f92f..00000000
--- a/scss/modules/header/_banners.scss
+++ /dev/null
@@ -1,31 +0,0 @@
-#banner {
-  background: $color-shade-darkest;
-
-  a {
-    color: $base-link-color;
-  }
-}
-
-.banner_content {
-  color: $base-font-color;
-  text-shadow: 0 1px 1px $color-shadow-light;
-}
-
-#notifications_banner {
-  background: $color-shade-darkest;
-}
-
-#banner:hover #notifications_banner {
-  background: $color-shade-darkest;
-}
-
-#notifications_dismiss_banner {
-  background: $color-shade-darkest;
-}
-
-#macssb1_banner,
-#macssb1_dismiss_banner,
-#winssb1_banner,
-#winssb1_dismiss_banner {
-  background: $color-shade-darkest;
-}
diff --git a/scss/modules/header/_base.scss b/scss/modules/header/_base.scss
index 96ec667d..a390bb46 100644
--- a/scss/modules/header/_base.scss
+++ b/scss/modules/header/_base.scss
@@ -48,25 +48,15 @@
   color: $color-highlight;
 }
 
-.channel_header_info {
-  .star,
-  button {
-    color: $base-link-color;
-  }
+.channel_header_info button {
+  color: $base-link-color;
 }
 
 .channel_title_info {
   background: $color-base;
   color: $color-highlight;
 
-  .divider_bar {
-    background: $color-shade-dark;
-  }
-
-  .channel_details_toggle {
-    color: $color-highlight;
-  }
-
+  .channel_details_toggle,
   .channel_actions_toggle {
     color: $color-highlight;
   }
diff --git a/scss/modules/header/_search.scss b/scss/modules/header/_search.scss
index c36beea8..b9cae205 100644
--- a/scss/modules/header/_search.scss
+++ b/scss/modules/header/_search.scss
@@ -10,10 +10,6 @@
   }
 }
 
-.feature_keyboard_navigation .search_form {
-  border-color: $color-shade-light;
-}
-
 .search_focused .search_form {
   border-color: $color-shade-lightest;
 }
diff --git a/scss/modules/header/_topic-editor.scss b/scss/modules/header/_topic-editor.scss
deleted file mode 100644
index 6669a18f..00000000
--- a/scss/modules/header/_topic-editor.scss
+++ /dev/null
@@ -1,32 +0,0 @@
-.inline_edit {
-  .inline_edit_inner {
-    &::before {
-      background: $color-shade-dark;
-      border: 1px solid $color-shade-light;
-      box-shadow: 0 1px 1px 0 $color-shadow-dark;
-    }
-
-    &::after {
-      color: $base-font-color;
-    }
-  }
-
-  &.inline_edit_success .inline_edit_inner::after {
-    color: $color-green;
-  }
-
-  &.inline_edit_error .inline_edit_inner::after {
-    color: $color-red;
-  }
-
-  &.inline_edit_editing .inline_edit_inner {
-    &::before {
-      border-color: $color-shade-darkest;
-      box-shadow: none;
-    }
-
-    &::after {
-      color: $color-highlight;
-    }
-  }
-}
diff --git a/scss/modules/menu/_direct-messaging.scss b/scss/modules/menu/_direct-messaging.scss
deleted file mode 100644
index c19c19bf..00000000
--- a/scss/modules/menu/_direct-messaging.scss
+++ /dev/null
@@ -1,10 +0,0 @@
-#im-list,
-#starred-list {
-  li.member.active .presence {
-    color: $white;
-
-    &.away {
-      text-shadow: 1px 1px $color-shadow-light;
-    }
-  }
-}
diff --git a/scss/modules/menu/_team.scss b/scss/modules/menu/_team.scss
index 7ef77cb1..21d2ac5c 100644
--- a/scss/modules/menu/_team.scss
+++ b/scss/modules/menu/_team.scss
@@ -39,16 +39,6 @@
   opacity: 0.75;
 }
 
-#im-list li.member.active .presence,
-#starred-list li.member.active .presence {
-  color: $base-font-color;
-
-  &.away {
-    color: $color-highlight;
-    text-shadow: 1px 1px $color-shadow-light;
-  }
-}
-
 .slack_menu_section::before {
   border-top-color: $color-base;
 }
diff --git a/scss/modules/messaging/_attachments.scss b/scss/modules/messaging/_attachments.scss
index 8bb93c69..c85da187 100644
--- a/scss/modules/messaging/_attachments.scss
+++ b/scss/modules/messaging/_attachments.scss
@@ -77,8 +77,6 @@
 
 .msg_inline_attachment_collapser,
 .msg_inline_attachment_expander,
-.msg_inline_file_preview_collapser,
-.msg_inline_file_preview_expander,
 .msg_inline_img_collapser,
 .msg_inline_img_expander,
 .msg_inline_media_toggler,
@@ -177,8 +175,7 @@
       }
     }
 
-    .ts_icon.msg_inline_media_toggler:hover,
-    ts-icon.msg_inline_media_toggler:hover {
+    .ts_icon.msg_inline_media_toggler:hover {
       color: $base-link-color-active !important;
     }
   }
diff --git a/scss/modules/messaging/_banners.scss b/scss/modules/messaging/_banners.scss
index ed505ffe..acae6e26 100644
--- a/scss/modules/messaging/_banners.scss
+++ b/scss/modules/messaging/_banners.scss
@@ -62,11 +62,8 @@
   border-left: 1px solid $color-shadow-light;
 }
 
-#messages_container {
-  &:not(.has_reply_banners).has_top_messages_banner::before,
-  &.has_top_messages_banner::before {
-    background: none;
-  }
+#messages_container.has_top_messages_banner::before {
+  background: none;
 }
 
 .end_div_msg_lim {
diff --git a/scss/modules/messaging/_base.scss b/scss/modules/messaging/_base.scss
index 19cfcb65..412083ac 100644
--- a/scss/modules/messaging/_base.scss
+++ b/scss/modules/messaging/_base.scss
@@ -233,14 +233,6 @@ ts-mention {
     border-top: 1px solid $color-shade-light;
   }
 
-  .more_messages {
-    background: $color-shade-light;
-  }
-
-  .more_messages_container .more_messages {
-    color: $color-highlight;
-  }
-
   ts-conversation {
     &::after {
       background: rgba($color-shade-darkest, 0.08);
@@ -310,18 +302,6 @@ ts-mention {
       }
     }
   }
-
-  ts-message.automated_grey {
-    background: $color-shade-darkest;
-
-    .timestamp {
-      color: $base-link-color;
-    }
-
-    &:hover .timestamp {
-      color: $base-link-color-active;
-    }
-  }
 }
 
 .channel_archive_messages.card .col:first-child {
@@ -399,14 +379,11 @@ ts-mention {
   }
 }
 
-.is_limited_div {
-  background-color: $color-base !important;
-
-  &.mini {
-    color: $color-highlight !important;
-  }
+#toggle-subscription-status .subscription_desc {
+  color: $color-highlight;
 }
 
-#toggle-subscription-status .subscription_desc {
+.bot_label {
+  background: $color-shade-darkest;
   color: $color-highlight;
 }
diff --git a/scss/modules/messaging/_dense.scss b/scss/modules/messaging/_dense.scss
index 0bcd37ef..e62e0813 100644
--- a/scss/modules/messaging/_dense.scss
+++ b/scss/modules/messaging/_dense.scss
@@ -6,79 +6,13 @@
       font-family: $base-font-family;
     }
 
-    &.unprocessed {
-      color: rgba($base-font-color, 0.75);
-    }
-
-    &.first .timestamp,
-    &:hover .timestamp {
-      color: $base-link-color-active;
-    }
-
     &.first .message_gutter .timestamp,
     &.selected .message_gutter .timestamp {
       color: $base-link-color;
     }
 
-    &.divider {
-      border-top: 1px solid $color-base;
-    }
-
-    &.archived,
-    &.bot_change,
-    &.joined,
-    &.left,
-    &.pinned .pinned_item_message_header,
-    &.purpose,
-    &.rename,
-    &.sh_created .sh_auto_msg_text,
-    &.sh_shared .sh_auto_msg_text,
-    &.topic,
-    &.unarchived {
-      color: $color-highlight;
-    }
-
     .message_content .message_current_status {
       border-color: $color-shade-dark;
     }
   }
-
-  #message_editing_info {
-    color: $color-highlight;
-  }
-
-  .file_reference {
-    .post_meta,
-    .space_meta {
-      color: $color-highlight;
-    }
-
-    .post_meta,
-    .snippet_meta,
-    .space_meta {
-      color: $color-highlight;
-    }
-
-    a:not(.member):not(.member_name):not(.icon):not(.timestamp):not(.preview_main_action):not(.preview_show_more):not(.file_preview_action) {
-      color: $base-link-color;
-    }
-
-    &:hover a {
-      &:not(.member):not(.member_name):not(.icon):not(.timestamp) {
-        color: $base-link-color;
-      }
-
-      &:hover:not(.member):not(.member_name):not(.icon):not(.timestamp) {
-        color: $base-link-color-active;
-      }
-
-      &.file_download_link {
-        color: $base-link-color !important;
-
-        &:hover {
-          color: $base-link-color-active !important;
-        }
-      }
-    }
-  }
 }
diff --git a/scss/modules/messaging/_light.scss b/scss/modules/messaging/_light.scss
index 003e3df9..4bcf7ada 100644
--- a/scss/modules/messaging/_light.scss
+++ b/scss/modules/messaging/_light.scss
@@ -6,14 +6,6 @@
       font-family: $base-font-family;
     }
 
-    &.unprocessed {
-      color: rgba($base-font-color, 0.75);
-    }
-
-    .msg_right_link {
-      color: $base-link-color;
-    }
-
     .message_content {
       .message_sender {
         color: $base-font-color !important;
@@ -23,38 +15,5 @@
     .comment::before {
       color: $color-highlight;
     }
-
-    &.archived .message_content,
-    &.bot_change .message_content,
-    &.joined .message_content,
-    &.left .message_content,
-    &.purpose .message_content,
-    &.rename .message_content,
-    &.sh_created .message_content .sh_auto_msg_text,
-    &.sh_shared .message_content .sh_auto_msg_text,
-    &.topic .message_content,
-    &.unarchived .message_content {
-      color: $color-highlight;
-    }
-
-    .meta {
-      color: $color-highlight;
-    }
-
-    .file_service_icon {
-      color: $color-highlight;
-    }
-  }
-
-  #message_editing_info {
-    color: $color-highlight;
-  }
-
-  .msg_inline_video_holder {
-    border: 1px solid $color-shade-dark;
-  }
-
-  .pinned_item_message_header {
-    color: $color-highlight;
   }
 }
diff --git a/scss/modules/modals/_base.scss b/scss/modules/modals/_base.scss
index 1e087248..10f61ca8 100644
--- a/scss/modules/modals/_base.scss
+++ b/scss/modules/modals/_base.scss
@@ -88,8 +88,3 @@
     background-color: $color-shade-dark;
   }
 }
-
-.bot_label {
-  background: $color-shade-darkest;
-  color: $color-highlight;
-}
diff --git a/scss/modules/modals/_channel.scss b/scss/modules/modals/_channel.scss
index 7facd1ad..e634970f 100644
--- a/scss/modules/modals/_channel.scss
+++ b/scss/modules/modals/_channel.scss
@@ -92,7 +92,3 @@
 .notification_prefs_icon::before {
   color: $base-font-color;
 }
-
-.channel_prefs_body__mute_help_text {
-  color: $color-highlight;
-}
diff --git a/scss/modules/modals/_invite.scss b/scss/modules/modals/_invite.scss
index fd1176f6..c925ed3c 100644
--- a/scss/modules/modals/_invite.scss
+++ b/scss/modules/modals/_invite.scss
@@ -24,13 +24,6 @@
   }
 }
 
-.admin_invites_container {
-  &:not(.experiment_guest_profiles_and_expiration) #admin_invites_add_row {
-    background: $color-base;
-    border-color: $color-shade-dark;
-  }
-}
-
 .admin_invite_row,
 .admin_invites_custom_message_container {
   .delete_row,
@@ -56,20 +49,6 @@
   border: 1px solid $color-shade-dark;
 }
 
-.admin_invite_row {
-  .delete_row {
-    color: $color-highlight;
-
-    &:hover {
-      color: $color-red;
-    }
-  }
-
-  &.delete_highlight {
-    background: rgba($color-red, 0.25);
-  }
-}
-
 #admin_invites_workflow .lazy_filter_select .lfs_input_container {
   background-color: $color-shade-light;
 }
diff --git a/scss/modules/modals/_preferences.scss b/scss/modules/modals/_preferences.scss
index 68fbdab9..28b37451 100644
--- a/scss/modules/modals/_preferences.scss
+++ b/scss/modules/modals/_preferences.scss
@@ -1,17 +1,4 @@
 #fs_modal.prefs_modal {
-  .section_rollup {
-    border-bottom: 1px solid $color-shade-dark;
-
-    &:first-of-type {
-      border-top: 1px solid $color-shade-dark;
-    }
-
-    &:hover:not(.active) {
-      background: $color-base;
-      color: $base-font-color;
-    }
-  }
-
   label.sound_option {
     &:hover:not(.disabled) ts-icon {
       color: $color-highlight;
diff --git a/scss/modules/modals/_quick-search.scss b/scss/modules/modals/_quick-search.scss
index 78fa026a..c1f0d538 100644
--- a/scss/modules/modals/_quick-search.scss
+++ b/scss/modules/modals/_quick-search.scss
@@ -64,7 +64,6 @@ ts-jumper {
     li.highlighted,
     &:not(.keyboard_active) li:hover {
       .channel_not_member,
-      .match_score,
       .member_real_name + .member_username,
       .member_username + .member_real_name,
       i.presence_icon,
diff --git a/scss/modules/pages/_downloads.scss b/scss/modules/pages/_downloads.scss
deleted file mode 100644
index 209d32d2..00000000
--- a/scss/modules/pages/_downloads.scss
+++ /dev/null
@@ -1,66 +0,0 @@
-.downloads_header {
-  background-color: $color-shade-lightest;
-
-  .welcome .meta {
-    color: $base-font-color;
-
-    a {
-      color: $base-font-color;
-    }
-
-    .pipe_sep {
-      background-color: $color-shadow-medium;
-    }
-  }
-
-  select[name=build_variant] {
-    color: $base-font-color;
-  }
-}
-
-.stay_in_sync {
-  .card {
-    background-color: $color-shade-dark;
-    border-color: $color-shade-darkest;
-
-    h2 {
-      color: $base-font-color;
-    }
-  }
-
-  .other_links {
-    color: $color-highlight;
-
-    a {
-      color: $base-font-color;
-    }
-  }
-}
-
-.sms_form {
-  .sms_number_container::before {
-    color: $color-highlight;
-  }
-
-  input[name=sms_number] {
-    color: $base-font-color;
-  }
-
-  input[type=submit] {
-    background-color: $color-base;
-    color: $base-link-color;
-  }
-
-  .sms_select_container .lazy_filter_select {
-    background-color: $color-shade-light;
-  }
-}
-
-.go_button {
-  background-color: $color-base;
-  color: $base-link-color;
-}
-
-nav.top.fixed {
-  display: none;
-}
diff --git a/scss/modules/pages/admin/_billing.scss b/scss/modules/pages/admin/_billing.scss
index 28d1d122..6db30a5b 100644
--- a/scss/modules/pages/admin/_billing.scss
+++ b/scss/modules/pages/admin/_billing.scss
@@ -36,10 +36,6 @@
   border-top: 1px solid $color-shade-darkest;
 }
 
-.billing_callout {
-  background: none;
-}
-
 .billing_contact {
   border-bottom: 1px solid $color-base;
 }
diff --git a/scss/styles.scss b/scss/styles.scss
index 989d6cdd..c63f6b33 100644
--- a/scss/styles.scss
+++ b/scss/styles.scss
@@ -16,17 +16,14 @@
 @import "modules/menu/base";
 @import "modules/menu/autocomplete";
 @import "modules/menu/calendar";
-@import "modules/menu/direct-messaging";
 @import "modules/menu/filters";
 @import "modules/menu/popover";
 @import "modules/menu/tabcomplete";
 @import "modules/menu/team";
 
 @import "modules/header/base";
-@import "modules/header/banners";
 @import "modules/header/day-divider";
 @import "modules/header/search";
-@import "modules/header/topic-editor";
 
 @import "modules/messaging/base";
 @import "modules/messaging/attachments";
@@ -92,7 +89,6 @@
 @import "modules/pages/admin/tooltips";
 @import "modules/pages/api";
 @import "modules/pages/apps";
-@import "modules/pages/downloads";
 @import "modules/pages/legal";
 @import "modules/pages/oauth";
 @import "modules/pages/spaces";