Ooh, I like that! I like that A LOT!!! And I LURVE the quilt that goes with it, but that IS out of my budget.
I think the only problem with it being white with a pattern is that the pattern would fade if you use Vanish White, and the white might eventually go slightly grey if you don't.
But if your DS's cream duvet hasn't got stains on it then I don't think this one would get stains on it.