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Iron Oxide
Probably because it is worn down rocks, and those are colors they tend to be
colors
The colors on a flag represent what kinds of food a country produces.
Go look your self
Go look your self
dispersion of light
no
what processes produce the different colors we see in opaque objects
Separating light into various colors produces a spectrum or rainbow.
Scion cars come in seven different colors, all neutrals. These seven colors are; black, cement, silver, grey, metallic blue, crimson mica, and white.
A Spectograph breaks light into colors and produces and image of the resulting spectrum.