Here is an update on my part of the mini swap.
Meph wants his Slannesh Champion to be pink. I started off with the metal areas and progressively tinted the metal. First layer was a blue wash and once that dried I went back over with the gunmetal color avoiding the deep areas. Next layer was with a purple wash and again I went back with metal but this time a brighter color. The last layer of tint was with pink and the brightest silver I have to just pick out the high spots.