For the default collections, we updated the backgrounds. They appear correctly for the icon on the homescreen, but not in the collection itself.
I think the fix will be contained into bug 1016221. Do you confirm Amir?
Bug 1016221 will fix this, and should land in the next few days (once tests are ready). We may actually want to do the tests as a follow-up, and land it early if we're having trouble with them.
(In reply to Johan Lorenzo [:jlorenzo] from comment #1) > I think the fix will be contained into https://github.com/mozilla-b2g/gaia/commit/9096ff7386da9a5dcf637a50e67d2828a8bbcb87. Do you confirm Amir? Yes. Bug 1016221 just landed, so you should have the Moz CDN backgrounds.