It would be nice to have a generic preset/effect for different game styles like FPS, RPG, MOBA, etc…
For example, a FPS game would have the entire keyboard in blue (or whatever) and WASD, spacebar, LCtrl, LShift, A, E, etc in white (or whatever color you want).
At least having the possibility to do this kind of customization
You’ll still need to adjust the layout to match your layout. SignalRGB doesn’t auto-map keys, but you can paint individual LEDs although this will override other effects. If you want an effect to launch with a game (e.g. RGBarz for a rhythm game), Pro lets you set this up with Macros. The effect will swap automatically, though you’ll still need to fine-tune your layout for the best look.
SignalRGB doesn’t do per-key mapping unless you paint each LED. To set up FPS games, you’d need to pick or create an effect and build an “FPS Layout” for it. For example, apply Camo Fade, adjust your keyboard, mouse, etc. to match, then save that layout. Before launching a game, start the effect and load the layout. If you want this automated, this feature exists by using Macros with a Pro subscription.