A couple of months ago I wrote a Komodo macro allowing the editor view tabs to be colored based on user defined color schemes, when the macro became stable I published it on Komodo community forum.
Amazingly the macro received more feedback so I decided to ‘convert’ it to an XUL extension.
Komodo macros are fantastic but they don’t allow to create complex UIs so moving them to XPI become a necessary step.
Now ColorTab is ready and can be downloaded from here.
The original name was KolorTab, the ‘K’ letter used to remember Komodo but I’ve decided to use a more tradictional name 
ColorTab look&feel
Amazon wish list
