@YamiYuki @thisweekinkde if I understand it’s with Kameleon via kded module.

Kameleon finds RGB capable LED devices in /sys/class/leds/; typically this would be keyboard backlights but in principle could be anything, provided it has …/multi_intensity.
When setting to enabled, it will apply the current Plasma accent color and automatically update the led color when the accent color changes. Color is reapplied on each startup but not when led color is changed intermediately by a different …