This is a shirt that came with the University EP. (I have made it base game compatible, Uni is NOT needed for this) I cleaned up the texutre, getting rid of the college writing that was on it as well as added some fun graphics to it. It comes in the 5 presets shown and most have 3 recolorable channels.
Comes in both Sims3Pack and .package files.
I have done a few styles for this. A faded skull and bones, a plain shirt with athletic stripes, a Keep Calm (in simlish), Love and lastly the mustache with a face.
Color Channels for Each shirt.