mdo/twitter-userstyle — pull request #9 by omgmog (2014-02-17 16:22:26+00:00)
Title: Added an inverted (white on blue) pushstate spinner

Embedded as base64 encoded image due to not wanting to add a dependency for hosting the image. Here's the animation as a PSD (with layers as animation frames, and a layer containing a gradient map for colorisation) http://uk.omg.li/TxaU