Thanks for clarifying your concept. I see that there is already a lot of work done relating the lights, maybe, the shadow light difference is - relating to the light and contrast settings of my monitor - simply too weak. But, I normally have the problem of screenshots in this forum being too dark.
Just a fast modified screen of yours. I mainly drowned the dark corners in black(they are too dark now, but it was a fast test only), changed some light colors, put sort of sprites on the lights like the window, and covered the floor below in black - don't know whether it were possible ingame, but it is nice, because it avoids distractions from the main room where the player actually is playing. Don't know whether you consider it as an improvement, though.
