It would be really useful to be able to re-order the colours of a particular garment on the Admin > Products > Product > Colours screen. Currently the colours display in a completely random order which is a little frustrating. It would be great to be able to set a specific order on the product page and have this mirrored in the swatches on the storefront and in the designer.
Also, there's actually no option to remove a colour once you've added one. This would be useful too!