I need to change the 3D viewport background color from the default gray to a higher-contrast color like white, but I can't seem to find an option to do so. This question has been asked and answered for other versions of Blender, but apparently not for 2.49b (i.e. the steps given don't match my interface, so I assume they're for different versions). How do I change the 3D viewport color in 2.49b?
Bonus question: how can I change the grid line color?