yes, Most of the men want to marry a women who is beautiful and fair
This think is followed only in India.In many other country skin color is not matter........
Color does not matter in Europe and Africa because there is no diversity. All Europeans are white and all Africans black. But we have variety of color- white, fair, wheatish, black. Hence we have color preferences.
India has a hot climate.Change in skin color is general.Even after taking necessary step skin become darken...........
There is diversity of climate in India- extreme cold to extreme hot. This could also be reason for color differences. Color does not change drastically in hot climate. A white color may be bit tanned in exposed too much to sun light. For skin safety, we need to avoid scorching sun.
The point is that unlike Europe and Africa, we have diversity of color. Hence, there are preferences about this.