Warm lights

I've been thinking lately about how light reflects off surfaces. The warm lights among these 'tanks' in this photo make the tanks seem outstandingly yellow when they aren't. Interestingly enough, my mind knows this... I assume if we took out the source of light the tanks would seem perfectly yellow. (Then again it would be pitch black with 0 light)...

Photo by a user named MSVG on flickr.
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