Pepper Grayscale Study

Three delicious sweet peppers.  A yellow, an orange, and a red.
Once these three peppers were converted to the grayscale, where they fall on the scale becomes visible.  The red, the one all the way to the left is much farther from the orange (middle) then the orange is from the yellow (right).  Also, I would have thought that yellow would have been closer to absolute white than orange is.  Unless my photograph didn't convert properly, or the lighting ruined something, I was wrong, and orange is actually closer.

Pepper Grayscale Study
I wonder if we would be as inclined to eat fruits and vegetables if they were just shades of gray.