Originally Posted by
eduskator
Black objects absorb more heat that's for sure, but I am not sure if you can actually notice the difference when pedaling on a bike in movement since the wind dissipates a lot of it.
I think a mitigating factor though is also for this reason, meaning that black objects can pull off more heat from what they're resting on. As a thought exercise, if you wear a base layer under a jersey, and you want a cooling (not a thermal) effect, are you better off wearing a black or white base layer?