If one is surrounded by a single option, the exact opposite is what will grab attention, perhaps its an adverse reaction but to be against the grain shows you're different thus attractive to those that have been dulled by a homogeneous trait across their community. A sort of pendulum effect - where a large swing in one direction indicates a likely equally large swing in the opposite direction to come after. Reactionary, and likely not sustainable but that is the overt perspective individuals can take - but overtness is often incongruent to truth for courting/romance.

- hypothesis: being averse/dullened to dominant trait in your community may relate evolutionarily to trying to keep the gene pool diverse