Thanks for the replies.

@Hersute

The only thing I'm really concerned about is the colour. Could I not just order a custom topper with a generic stock size and my own colour? The pieces I'd be cutting from it would be really small, so I don't see why it would be necessary to send in a template. All I really care about is getting the colour right. I've read from guys on hear that have used one piece well over a year because they were able to just keep cutting small pieces from it whenever they needed new ones.