Don't understand what do you mean. Can you take screenshot, when it happens?
I think I have just found a video where those symptoms are visible ( green line at the top, colors are wrong).
I wouldn't call it banding though. It's more like the color channels are shifted relative to each other ( it's not the colors what are wrong, but their 'position' ).
I have uploaded a screenshot to http://db.tt/QXskFmku
The video can be found at https://www.youtube....be_gdata_player
I may provide a logcat later in case you aren't able to reproduce it.
Edited by Sulthekk, 07 November 2012 - 01:14 PM.