I don't know. When I hear someone prefer a certain skin tone compared to say, the intangible traits, like personality etc, or physical traits, like a big ass or titties, but going STRAIGHT to skin color is odd as hell to me and a little close-minded. People don't understand that society has conditioned a lot of people to like a certain thing or type subconsciously. Basically just keep that shyt to yourself.
If ya'll notice, darker skinned people aren't treated well ANYWHERE in the world. Look at South America, Europe, China, Japan, etc, even within their own ethnicity/nationality.