Originally Posted by Ariakas
You might have to step out of your comfort zone into someone elses to find what you want, and heck you might like it.
I think Ariakis' suggestion here is a good one.
My favourite fiction genre is murder mystery, but I don't ever use that as a criteria for who I am willing to date. On the other hand, it probably wouldn't even occur to me to date somene who dressed in a way that they really liked but that I found goofy or otherwise unattractive. If you actually notice someone as a prospect, the surface things that make them different than you are probably not dealbreakers, even if you find those things strange.
That said, you might also consider starting a new poly- event more in line with your interests. There are probably other poly- people in your area who aren't very enthusiastic about tie-dye and science fiction, but might like a... murder mystery book club, or pool league, or whatever.