COLORADO PLUMBING AND GAS LINESLogo Design Contest Logo Design Contest Contests / COLORADO PLUMBING AND GAS LINES COLORADO PLUMBING AND GAS LINES has selected their winning logo design. For $300 they received 86 designs from 34 different designers from around the world. Find out how LogoTournament works How LogoTournament works Contest Entries by NZR Return to Contest Return to Contest Withdrawn Prefers others. #9 Discussion No comments yet.