MKS pedal dust cap. (domed) Black plastic if possible.

[trail-blazer]

A recent Gumtree find came with a set of MKS pedals (with straps and clips) that I'd like to bring back to life but they have a cap missing.

I know Wiggle do the silver caps but I'd rather use a single black cap than buy two new ones.

Does anyone have a random cap knocking around? Doesn't have to look too pretty - just functional.