A couple of things: Yes, the white will show on the gray shirt and the yellow shirt. I made a white plate for that. It will cost extra for the additional screen but somehow a skull that wasn't white just didn't make any sense. Of course, on a white shirt you won't need the screen. Also, don't know if they have this color yellow, but I think it looks good. I had a yellow shirt and just thought I'd mock this up to see what it would look like. I don't know what arrangements have been made for orders. But, anyway, here they are. The Webmaster