LearnBoost/stylus — pull request #456 by joemccann (2011-11-05 14:36:29+00:00)
Title: Added LESS-inspired 'spin' method.

LESS has a *spin* method for modifying the hue of a color by a specified amount. In many cases of porting LESS to stylus I've needed this method and may find it useful for others to have it as well.

If not in core, should this be added to something like nib?