Originally Posted By: John Mark Smith
What Colour Does A Green Cloth Appear In Yellow light?
It depends on spectral purity of green and yellow color. If these spectral colors wouldn't overlap, the result may be even black. In real case it would be gray shade of yellow color. The real appearance will be more colorfull, though - because human eye has an tendency to add more hue shades into duplex pictures, then they really have.


The light of sodium street light is nearly monochromatic, so every color appears in it like gray shade of yellow and green color of plant leaves appears rather dark.