I used a reference for tones. I have a tendency to make everything over saturated and cartoonie. so I fetched some image of a subway station. some fashy one, and blured it to pick my pallet. but not the arquitecture.
well, I kind of have to say that I like the banners hanging there. because I'll be adding alot of stuff. telefone boths, posters, publicity. some wet floor sighs maybe... so i'll have detail every where. I just putted them there for color balance.
so, thanks everyone for the comments. hope not to let you down.
Kazuya