So many things work so well with clowns.
I currently stay away from traits where the homozygote is patternless or colorless (lessers, fires, yellowbellies), though I will likely add them in later on in projects. I do REALLY want a super pastel super enchi hypo lesser some day, and working fire and/or yellowbelly into stuff can really make it pop.
However, for taking just about any project and making it pop, it's pretty easy to find a way to work with pastels and hypos. Enchis are in high demand and hard to get a hold of and plain expensive, but are #1 on my list to add on to my SPOG project.
Enchi clowns are pretty ridonk, but so are killer clowns.