Koh's Sprite Joint

[Sketchasaurus]

The saturation of the green used here is really loud and rather unappealing to look at, particularly in the large quantity that it's used. it interferes with the readability of the player character, which is a big don't in effective design; you want to make it easy for the player to keep track of the character (and enemies, key objects, etc.) while still maintaining a stylish look. if you're using colors from the NES palette, there are a few greens that would work better.