LearnBoost/stylus — pull request #654 by jasonkuhrt (2012-05-04 02:13:34+00:00)
Title: Allow fade-out and fade-in to take % units; Add 2 new bifs for help in simple math work as used in the new fade-out and fade-in bifs

This is now possible:

fade-in(rgba(#eee, 20%), 20%)
> rgba(238,238,238,0.4);