What do you mean glitch?
it is not if you are refering to the black thing, the hero is jumping..haha,
for the outside pallete, everytime i took the screenshots it is evening time hence why the pallete changed..haha
also the gym tiles dont look that bright. your outside pallets (atleasst in the screens you posted recintly) are bit /lot. dark. The gyms tiles though could be brought down there and thre (grass, adn tree top)