Try Tye-dye, and just use all the colors. :-)
Well, between us, Wildstang, and the X-cat's, it might be hard to find your own Tye-dye design (We are all very destintive)
We manage to tye dye everything. Shirts, short's, labcoats, socks, headbands, we even do our robot in the off season. :-)
http://www.tj2.org/2002/imagepages/p4260241.html
http://www.tj2.org/2001/imagepages/phaneuf.html
We also have our "Dress Blue" shirts. These are usually worn at event's like when we visit the Statehouse, Friday compeition day, or events where we have to look slightly spiffier.
http://www.tj2.org/2001/imagepages/mrscalefandmoe.html
Besides, Blue shows up better than White. :-)
http://www.tj2.org/1996/imagepages/96hamp11.html
I do have to warn you. You have to practice alot with Tye-dye to get it right. (Unless you have someone Make your shirts) We've always hand Tye-dye'd our stuff.
Here is probably the only picture you will find of our First Tye-dye shirts. We've had Tye-dye every year we've been in the compeition.
http://www.tj2.org/1996/imagepages/playerstation.html
Took us till around 1998 to get it right.