Can you have both power together

I don't see why not, what were you thinking of putting together?

Connecting to the speed force and power ring

nice, what colour ring would you use?

Blue and green power ring

I don't think you can have 2 power rings at once. But I'd also take wither a blue or green one.

I take green ring

what colour lightning y'all have for your speed?

What color did eobard thawne have in the comic

most notably, Red, but it has changed here and there