Not any more embarrassing than just about anything any football player has ever done for fun on camera. Look at Rosie Greer as the two-headed monster in that awful horror film. Doesn't change his greatness on the football field.
As far as the uniforms, some people seem to have a thing against the yellow. Which I don't understand at all considering the two most successful franchises in the history of the league wear bright yellow. If it's good enough for Pittsburgh and Green Bay...two teams that didn't feel compelled to screw up their uniforms, then it should be good enough for the Rams and the fans.
It just goes back to the Rams not truly having an identity or strong roots IMO. Cowboys, Steelers, Packers...hell, even the Raiders are secure enough in who they are that they don't have to resort to constantly futzing with their uniforms(among other things).