http://bugs.winehq.org/show_bug.cgi?id=10973
--- Comment #4 from Roderick Colenbrander thunderbird2k@gmx.net 2008-01-13 16:33:01 --- I have looked into the bug. The palette index patch is in fact correct. The problem somehow seems to be that some wrong value is stored in the alpha component of the palette. Setting index_in_alpha hided the problem. I'm not sure what is wrong.