So there’s rust-communing with souls, blue-manipulation, bronze-communing with creatures, yellow-psionics, Jade-rainbow drinkers, I think, but does each blood color have a common power or just a few colors?

Olives, Fuchsias, Violets and Teals don’t seem to have powers. Indigos are implied to be generally stronger, but that may also not count exactly as a power, more than a trait. Limes likely had some powers but we have no idea what those powers are.