yuchi/stylus — comment on commit 20f0457947697899c29e48ab320aea420225ed0d
File: test/cases/bifs.mix.styl line 7
By yuchi:

Mh... after a good look at [SASS implementation](https://github.com/nex3/sass/blob/master/lib/sass/script/functions.rb#L951), looks like it takes account of the alpha of the colors in the algorithm itself. Tomorrow I'll have a deeper look and will finalize my propose.