You can cover up the black Apple logo on the back of your iPad with a rainbow Apple sticker from CoolDecal for a cool, retro look. The sticker is opaque, so the colors should be true and bright. The sticker is only $3.50, so I don’t think it’s going to cover the entire back of your iPad. The CoolDecal store is part of Etsy, and it seems to be located in Hong Kong. Unfortunately, shipping for the decals is $4.99. Although they use air mail, you should still allow 10-25 days to receive your sticker. CoolDecal also sells skins and stickers for the MacBook and iPhone.