KAT - I like that a lot, but I think more attention should be paid to the dark, ratty atmosphere in Dreamweb. For example, your floor tiles are pretty light. Not to mention the couches are exactly rectangular, which makes them look brand new (albeit sterile as well). That's smart tiling for saving space, which is good to be thinking about for GB games, but I think you can justify more liberal use with the tiles by the fact that Dreamweb is a pretty short game.
Stuff like this is nitpicking, and your mockup looks good and is readable as it is. I just get excited when it comes to Dreamweb.