Water Bottle Color Vs. Sun?
I've wondered for a while now if bottle color would affect water temperature on a sunny day. Has anyone looked into this? Would a white bottle stay cooler since it reflects the light rather than absorbing it, black the hottest, etc? What about the stainless bottles? Should they be the coolest if you had a mirrored surface to reflect all of the light? Though metal slides always get scorching hot in the summer, so maybe those bottles would be the hottest?