Yellow

 School bus yellow was chosen mainly for safety reasons since the color stimulates the red and green photoreceptors in the brain sending a double transmission making the color hard to miss, but how else does yellow score as a color? Not too well unless you happen to be a pollinator. Yellow ranks the lowest in attractiveness with both men and women, the highest scoring colors were red and black. The only places where yellow might be a good color are places that don't get a lot of sunny weather as those people when surveyed weren't nearly so anti-yellow as people in sunnier climes. That kind of explains the derogatory connotations associated with yellow, like yellow-bellied and yellow journalism.