I would go for a white with a hint of green or blue in it to reflect as much light as possible. I would also add a corkboard or some panelling to the height of a chair rail so that kids can stick their drawings or even draw on the walls without you having to stress.I used a product called Lionite and stuck them to the walls. Kids could draw, paint, scotch tape to their heart's content. When they got older, I just had to remove the rail and boarding...