My personal idea - A kind of tribal design on the sleeves, maybe red to blue like the site, (tribal tapers up to the shoulders, rather than down) - Names across the back as per usual, maybe a kind of red to blue to red.

ATK Skull on the front as per usual, sponsor on the back.

I personally still see yellow as the main colour of ATK, but that's just me.

Oh, and instead of plain black shirts, maybe a kind of dark green (like the text area of the site.)

I mean, we don't want it too busy, or it'll look like a hawaiian shirt, but we want it to stand out aswell.