Utilities for Sass CSS extension language
Hot to use
Import
@import "rgbas";
Define an RGBa variable
$lightGray: rgba(204, 204, 204, 0.5);
Use it (double parentesis are mandatory for a Sass issue: haml/haml#279 )
@include background-color-rgba(($lightGray));
Note: use rgbas.old.css if your compiler don't find several functions.