G915: If you spam the keys with this effect, top function keys, including the battery indicator, will flash RGB too, shows they are actually RGB and connected, but (badly) disabled in firmware :
Logitech G810 Orion Spectrum Review – A nice RGB mechanical keyboard, but has cheaply made keycaps | Totally Dubbed
Logitech G810 Orion Spectrum RGB Mechanical Keyboard Review - The Streaming Blog