Chlorophyll
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Calabrese, which is green at first, usually turns purplish when it is cooked. However, when it is steamed it can sometimes lose it's color altogether.
acid rain
Many mineral powders will change colour when heated, as they lose their water of crystallization.
If you mean do the needles change color from green to red or brown with the fall, then no, their color does not change. However, in the spring time the new needles have a much lighter green color, which darkens as the year goes on and they are subjected to the cold of the winter.
Maily the the leaves. They turn orange or yellow in color
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Capsicum will always lose its color when cooked or heated. The idea is to add enough to where it won't lose the desired color in the final product.
Generally in the fall a plant will lose it's green pigments (chlorophyll) and the result is yellow orange or red leaves.
Red because it has the shortest wavelength. Then you lose orange, green,blue, violet.
A person can lose the color of their eyes through a condition called heterochromia, which can be caused by injury or can be hereditary.