Glad you liked it. You have to use W and S to adjust the bulge of the spectrum. How much damage happens to an enemy depends on how wide that color is in the spectrum. Eg if the bulge is on yellow, yellow enemies will be hit very hard but blue ones will be barely hurt.
I did consider painting the ground but that might’ve made enemy colors hard to identify and interfered with the gameplay. That’s why the bg is dark’ish and enemies are brightly colored.
