New specialty t-shirts for your Sims (male edition)

Hi,
This is my first upload here. All the uploads I'm doing today were rejected at MTS2 for various reasons (but mostly what it all boiled down to was telling me that my designs sucked). I hope at least someone here enjoys the time I put into these. I'd like to credit the author I recolored the basic white shirt from, but I can't remember where I got it or who they were. If that person happens to be on this board and recognizes their work please PM me and I'll add you to the credits. No custom mesh is needed that I know of.

I've included both my specialty tees and some plain basic color tees. Also, if anyone knows how to convert these tees for use with young adults it would be greatly appreciated. The body shop I use doesn't even show the base color shirt I used in young adult mode and there is no way that I can see to do this. So, they are only available for adults. Which is a pity since a few of them would be perfect for the younger crowd. Since I'm on a Mac and we usually don't get all the bells and whistles for stuff like this maybe one of you Windows people might like to try. Thanks.