Not picking up white backgrounds properly.

[PadraigK]

This image http://thisamericanlife.org/sites/all/themes/thislife/images/logo-square-1400.jpg has a white background. The original Mac ColorArt class detects it correctly, however, the background color comes out grey from the iOS version.

[rweichler]

Weird hack, but I got around this problem by multiplying the RGB by 256, flooring it and checking it against RGB(224, 224, 224).