Albinism has always been my favourite option though, a very rare and beautiful condition which is often seen in the worng manner, especially in the upper frican countries where it is seen as a result of witchcraft.
I have put up a visual mix of some of my favourite images I've collected from the net. 'm also planning on using Albinos for my year end fashion showcase in November.
Do enjoy.
More on Albinism on Positive Exposure