Q. Does Outlaw support themes to change the colors?
A. Kind of, but not support for existing themes from TextMate, etc.
You can change the color of most of the editor portion inside Prefs.
Look in Preferences > Editor > Syntax Colors
The drop-down at the top of that pane shows Color Themes — that’s picked up when Outlaw launches from files on your drive. In Outlaw go to the Tools > Show Utility Folder and a window will open up. There should be 2-3 files that start with theme- and end with the .xml suffix. You can duplicate one, change the name (just the center portion of the file name), and relaunch Outlaw. Go into Prefs and choose that theme, change the colors the way you like, then hit OK to save that newly configured theme file.