Good question, Susan. I don't know the answer, but I read not long ago in this forum a comment by someone saying she "displayed" all her shirt designs on either black or white because those were the only two colors that every apparel item had in common. That made sense to me, and I've been doing that since (though I still have thousands of images that are "wrong" as, given the very few clothing item sales I have, it's not worth it to me to go back and fix all my uploads.