Proof that black is the slowest color
It is a fact that white reflects all colors of light, and black absorbs all colors of light. The brighter that it is outside, the more light that a black F6B will absorb. The more light it absorbs, the heavier it becomes, thus slowing it down
Logic dictates that with enough riding, a black F6B will become so overweight with absorbed colors that it will eventually be unable to move under its own power.
No proof of anything , except the last one
Moses said - the law is everything.
Jesus said - love is everything.
Marx said - capital is everything.
Freud said - sex is everything.
Einstein said - everything is relative.