playerColorPicker in gamesetup window screwed up when switching from window mode to full screen.

[mimo]

When starting a new game in window mode and then switching to full screen (1920x1200) using alt-enter before starting a match, the color picker is screwed up as seen on the screwedColorPicker.png attached. Same thing happens if starting the game in full mode, and then alt-enter to go to window mode, the colorPicker is also screwed up in the same way. Futhermore in both cases, if a I click on the back button in the gamesetup window and then starts a new match again, the colorPicker is now fine. Looks like some initialization missing. Would be nice to check if reproducible by others, and if yes, maybe worth to fix before A21?