quicksilver/Quicksilver — pull request #1099 by pjrobertson (2012-09-07 15:02:16+00:00)
Title: Allow colour objects to have different icon sizes

Not sure why I never submitted a pull request for this.

The only place that I know of that uses colour objects is for the 'Set Label...' action in the File Attribute Actions plugin (just done a quick search for `NSColorPboardType` and I can't find it anywhere else)