I think you did him a favour. If his GF, specifically suggested yellow, then you've given him an important lesson on realationships, and what your lady expects you to wear. It generally takes most blokes an eternity to learn this. Fortunately I had two fashion concious sisters growing up and If I couldn't get away with the hippy look, they ensured I dressed appropiately. (Carole did'nt have to do to much training with me )