If he is ten, then he doesnt need an Alt shell... let him learn how to manage the os's shell first...hell... let him find out what a shell is first, and if his other class mates are 10 as well, most, thats most, will have the defualts anyway, just recolor the 3d obects for him, and set up a nice wall, something he likes.

Dont be that family member who makes something "they" like, for someone els.

not to mention its for school, function over form is what you want here, i still use paper bags to cover my books.