Changing the "Screen Glow" option to "constant" or "off" doesn't do anything. The game will persistently and constantly "pulse" the icons it thinks you should use (level up, summon demon, dismiss demon, etc.)
I tried saving and restarting the game, to no effect. The game remembers my choice in the options, it just doesn't do what it says it should do.
Suggested alternative behavior: Pulse for 5-10 seconds, then remain a constant glow, as at that point you are probably ignoring it on purpose.