mozilla-b2g/gaia — pull request #6082 by ian-liu (2012-10-30 09:04:38+00:00)
Title: Bug 799711 - [Clock] Update analog clock face background to avoid banding issues

https://bugzilla.mozilla.org/show_bug.cgi?id=799711

The root cause is a transparent image with clock face.
This kind of image will make the banding issue.

So, I replace the analog clock background image without transparency.
Use small resolution(320x460) image on Ototro.
It will improve loading time for the background image.