This is quite an interesting one as I can’t see any logic in my reasoning, but here are my thoughts:
1. Black rims are acceptable on any frame colour, the safe choice
2. White rims are cool on any frame colour apart from black IMO
3. Silver rims look like they come from the 70’s and are unacceptable
4. Grey rims can look subtle and moody on any frame colour
5. Coloured rims look a bit wierd if they match the frame, a bit like a car with body coloured wheels, BUT a bit of contrast is cool. Anybody got a baby blue frame with orange rims? An orange frame with green rims?
I think that we are all very lucky living in the disc brake era, we can have any colour rims we want and not wear through the finish with ‘orrible rim brakes. I was gutted the first time I took my ‘hard surfaced’ MA40s out in the rain in 1987, they always looked cr@p after that.