Nice edit, milokey. Thank you. I'll definitely be using your edit as a reference for my next edit.
Changing it into a night/twilight scene was kind of a last minute thing that happened because I darkened the sky so that it would be easier on the eyes. Therefore all the mid/upper bg stuff in my current version doesn't really account for that.
I was hesitant to make the mountains in far bg so dark since things appear lighter in the distance in real life. However, that looks better so what the hell ever lol.
The coaster in the far bg reads a lot better now, but unfortunately, that ultimately that won't work because of how the layers/parallax scrolling operates (there's three bg layers). I'll see what I can do to improve readability on that. Perhaps I'll change it to two bg layers with the sky on one and everything else on the other.
The darker dirt in the foreground looks a lot better. Definitely will change that.
I've really been slacking on this project lately, but I just haven't been feeling very motivated. :L I'm going to try to get the colors fixed on this asap and then come back to adding more stuff later. I really need to be focusing more on prototyping than pretty art right now.
EDIT:
Personally I think this looks vastly better. I loved in Milokey's edit how everything in the foreground was so much lighter than everything else giving it the appearance of being artificially lit. So I tried to apply this to the coaster. However there is still no reason for it to be blue... I'm going to change to be more red. I just ran out of time for tonight. I'm also going to make a gradient for the sky.