http://bugs.winehq.org/show_bug.cgi?id=9493
--- Comment #5 from Stuart Middleton Stuart@houseofanime.org 2007-08-31 09:42:53 --- After a little more analysis on how Wine handles themes, I've found that in the RGB input from a .theme file is converted to RBG in user.reg, and then read back as RGB again. In other words, winecfg swaps the blue and green figures, leading to the peculiar colour scheme.
I've attached two files, one showing the content of the default xp theme file and one showing what user.reg looks like after this theme has been uploaded via winecfg.