fire works with almost anything, which makes this difficult to answer.

maybe further explore the gene complex with vanilla?

or maybe enchi, enchi has a crazy effect on super fires so you may want to have enchi fire, to aim for enchi super fire later on. besides the fact that enchi fire would be awesome anyway, because both enchi and fire are very good enhancer genes that work nicely with a lot of other morphs.

more pastel also couldnt hurt. or a spider or pinstripe.