Eyeshadow

Of all the makeups, eyeshadow is the strangest. Traditionally the purpose of makeup is to exaggerate features through use of color.

Lipstick is red because lips are pink.
Mascara is black because eyelashes are gray.
Rouge is pink because cheeks are blushy.
Also hair dye, belladonna, face powder etc.

If someone abandons this Cardinal Rule of Makeup it is because she is emo and therefore prefers to wear black lipstick or blue rouge (never seen it why not come on counterculture).

Eyeshadow does not follow this rule at all. Sometimes eyeshadow is blue. Sometimes it is red. Sometimes it is buff. All of these colors on the right are considered reasonable eyeshadow colors. Eyelids do not come in these colors. Eyelids are plain and flesh colored. Flesh colored and unimprovable.

Why is eyeshadow the only makeup like this?