When you are in the colours submenu of the Game Options menu, you are unable to see previews of the colours of any of the default presets unless you modify settings in the default setups. Instead, all you see at first is a white box for the menu overlay and a white cross hair for everything else, as well as a white box for the map elements. As you can see in the images below, the settings themselves are not broken, because even if you move the slider one point to the right and back again, the preview is fixed.

This is the case for all of the default colour previews, and is a bug that was introduced recently since in the last build this problem wasn't present. {F21566} {F21567} {F21568} {F21569}