I'm sure there's something punny I could say about the black sheep of the family or something but I am going to resist, since I already made you suffer through "Feeling Sheepish" as a title!
Be the first of your friends to have a bright yellow couch. Neutral surroundings also help to diffuse the brightness of yellow, so this couch feels complementary instead of overwhelming.
You know that shelving unit in your living room filled with knickknacks? Revamp it by making it a display of your silver. There is no rule that these beautiful pieces need to be behind the fancy glass doors of a china cabinet: put it out where everyone can see and admire.
Gray and bright yellow are the perfect couple. One is bright and outgoing, the other solid and serious. Together they are all good things rolled into one.