The HUD looks really goofy to me, but its probably some kind of style thing or something I don't know. I know I said desaturate the lights, but you should also try using more colors than one otherwise your game turns into "real is purple" like it was in the 90s (actually real was green or dark back then).
You can get away with more object colors if the light is more desaturated too and you won't have clashing problems.