I got an rmini in white, but think I want in black. I lost receipt. Will that be a problem if I go to apple store and just ask for replacement?
Anybody ever have to do this?
Yeah. The serial number gives Apple a lot of information. They can get basically any information about your iPad with the serial number. Like the activation date and how it was purchased.
I have returned a couple of things to my local local Apple store. It's never been a problem so-far. I don't know about elsewhere, but here in Plymouth, UK, they email you your receipt as standard practice.
Trust me if you bought it from a Corporate Apple store they will have it on file or be able to find the purchase. Whether they will swap it or not is up to them but I am sure they have a standard policy like Best Buy for example that you can swap it out as long as you have everything that came with it including the retail boxing.