Use command-color for shebang recipes

[avi-cenna]

The recent command-color flag works nicely for regular just recipes, but it's not used for shebang recipes (e.g. those which start with #!).

So if I do just --command-color purple foo, it will echo recipe lines in purple if foo is a regular recipe, but will still use white if foo is a shebang recipe.

Unless anyone thinks this is the desired behavior, I can probably work on a fix for this.

[casey]

Using the --command-color for shebang recipes seems reasonable to me!