I have rgb on my mouse, keyboard, monitor, GPU, aio, mobo, soundcard, case.
I only use the RGB on the mouse (subtle), keyboard (pretty), soundcard (subtle), mobo (subtle) and GPU (logo).
All of this is red, and not overly bright an in your face.
Case never gets rgb turned on because it is way over the top bright (NZXT h700i with only 1 led strip installed, 2nd one will never see the inside of my case)