I just tested this and unfortunately the test case doesn't pass on the nightly. I am seeing (252,40,252) instead of the (255,0,255).
(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252), (252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0), (0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252), (252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0), (0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252), (252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0), (0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252), (252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),(252,40,252),(0,0,0),
Mozilla/5.0 (Macintosh; Intel Mac OS X 10.8; rv:18.0) Gecko/18.0 Firefox/18.0 as downloaded and installed just a few minutes ago.