Our local high school colors are the same as the Ohio State Buckeyes, so red and gray anything goes over well. Add some white or black to it and it's great, too. The quilts I made for my 4 great nephews were made with reclaimed wool clothes. There's a lot of red Sag Harbor wool blazers at the Goodwill and several menswear wool blazers in pinstripes and herringbone. I used a carpenter's square pattern, which was easy with 10 inch HST's. If you can find micro prints in sports team colors, they will be great for boys. It doesn't necessarily have to be a sports theme fabric.