Why are most airplanes painted white?

Does the color have an impact on flying? Or visibiliy? I would assume that it's easier to see a red airplane than a white airplane in the clouds. Why do most airlines paint their planes white? Or at least 90% white with a logo or stripe. On the other hand UPS, DHL or the military has no problem with full... show more Does the color have an impact on flying? Or visibiliy? I would assume that it's easier to see a red airplane than a white airplane in the clouds.

Why do most airlines paint their planes white? Or at least 90% white with a logo or stripe.

On the other hand UPS, DHL or the military has no problem with full color.

thx
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