I have the RADEON RX 460 (2GB) card and I'm having problems with the recorder (re live).
I can play normally with the perfect graphics and with considerable performance but when I use Re Live and see the result of the recording ends up losing a lot of quality in the colors: red, strong pink and orange.
My system is always up to date, I would like a minimum of satisfaction because most updates are always geared towards RX 480.
See with your own eyes and open wide.
Without Re Live: http://prnt.sc/en65xi
With Re Live: http://prnt.sc/en64xt
All the RX series cards will experience gains mentioned for the RX 480, it's just that since that card has the most power, it will experience the greatest amount. As for your screenshots, all 3 look identical to me as far as colors go.