Quote: Yeah, what's up with niggers and purple? Does it remind them of grape soda or do they drink grape soda because it's purple? It's the old chicken/egg paradox in a simian context.
Purple was historically considered a royal color. To a simple mind purple means class, money and power.
Or they could all be Prince fans. Sometimes the obvious is much more likely than the complex psychological probe.
I learned purple was the color of royalty from watching a Casper the Friendly Ghost cartoon in the late 70s.