Well I am looking at getting together a work log and the color combo will end up being black and red. Well more burgandy really, but a deep red.
I might not need it, not sure. Still looking into all the aspects etc.

As for the staining, I'm not overly concerned with that, as long as it won't physically damage the pump(s) or block(s).

I'll follow up with you if I do end up needing it.

Thanks for the quick reply!