>>1357636>>1357636I don't think there's any merit to the idea, no. Because it's subjective and most people who believe it were told it. Black and brown go together just fine. Especially considering the primary colors of the bike are black and blue, with silver and brown as accents.
I'm sorry your tastes are socially conditioned. The black/brown thing is literally only a thing in the West among people who think they know fashion from Art of Manliness suit guides.