http://bugs.winehq.org/show_bug.cgi?id=12230
--- Comment #11 from Alexandre Julliard julliard@winehq.org 2008-05-20 14:37:41 --- Created an attachment (id=13204) --> (http://bugs.winehq.org/attachment.cgi?id=13204) Use screen depth bitmaps for icons.
Please give this a try.