I bought one of these and found that it could only display 512 colours. A firmware update was promised, which was released about 6 months later. The advertised 16.8million animation wasn't quite achieved with the update, you can choose from 16.8million colours, but animation results in a certain amount of flickering. That wasn't what I expected from a £150 keyboard, and I didn't expect a couple of LED failures either.
Got a refund and bought a Coolermaster Trigger Z just before they stopped production for £70. It may not have RGB keys, but all of the white LEDs still work after 12 months of use.
This isn't the RGB K95, this one has white LED backlighting.