My build has Zero added rgb. The only rgb it has is the native rgb on the motherboard run by Asus Aura. I have it set to do 1 thing. It's green when the cpu is relatively cool, but once it starts getting warm, it gradually turns amber then red. I set the temp range. It shines on the wall 4ft away.
So mine actually serves a visual purpose, I don't need an in game overlay to tell me temps, a green, amber or red glow on the wall does that for me.
I've seen other builds do similar, in reverse, sort of. During heavy loads, the rgb is diffused, set to go dark and constant, only returning to unicorn puke at light/idle loads.
You can set argb/drgb to do whatever you need it to do, so the unicorn puke you see when just sitting idle isn't necessarily a distraction when gaming.
You can always turn it off too. There are plenty of options and opinions on how it's setup to work.