After a certain amount of time, which can be set in the RGB Unleashed software, Z-series keyboard RGB lighting will turn off. It's an abrupt turning-off, like flipping a light switch. And when a person presses one of the key, the light turns on again, just as abruptly.
 
I'd like to have a gradual fade-out and fade-in option, where the lighting might fade to off over a 2-second period, and, when a key is pressed, might fade back on over 0.7 seconds. The fade-out and fade-in times could even be made customisable in the Unleashed software.
 
I find the instant off / on change in lighting to be jarring and distracting if, for example, I'm watching a video on my computer from a distance, like if I'm in bed or something.