Rebecca Volpetti (AnalIntroductions Private) Rebecca Volpetti University of Colorado Buffaloes Primary Logo T Shirt Sport Grey. Whether you are tailgating at a University of Colorado football game, or in the stands cheering on the Buffaloes Basketball team, show off your University of Colorado Pride in this tee. Great for Christmas gifts, birthdays or just to treat yourself to a great graphic tee. Design and Custom Printing by Underground Printing Printed on Heavy Cotton Tee 5. 3 6. 0 oz., pre shrunk 100% cotton. Heather and neon colors are 50 50 cotton polyester, Antique heather colors and Sport Grey are 90 10 cotton polyester, Ash is 99 1 cotton polyester.