twitter/bootstrap — pull request #3802 by krnlde (2012-06-11 17:39:08+00:00)
Title: Fixed wrong filter parameter type (IE Bug)

Fixed the gradient filter parameter types (from RGBA to ARGB) which affected the background gradients mixins and produced a wrong alpha blending in all IE versions.

This bug was discussed in: https://github.com/twitter/bootstrap/issues/3630