[ajju]

>In much of Africa and Asia, whiter skin is attractive because white >foreigners have all the wealth and power.

This is not true, at least not the way you think. Attraction to (bias for) fair skin is a very very old tradition in India. If you look at Ramayana - one of the two Hindu religious epics which is at least thousands of years old, Sita, the main female character is described as fair many many times.

It has been argued that the fascination with fair skin came about because of the Indo-Aryan migration (http://en.wikipedia.org/wiki/Indo-Aryan_migration) though some people have argued that Aryans were indigenous to India as far back as the Harappan civilization. (http://en.wikipedia.org/wiki/Indigenous_Aryans)

That many of the ruler classes (The Chitpavan Brahmins in Maharashtra http://en.wikipedia.org/wiki/Chitpavan and the Moghul Nawabs) had fair skin may also have contributed.