Looking really sharp there! Love the decoration on the benches and chests!
I don't think there are color limitations right yet. Also, remember that strange mood beds and such can be made out of odd materials, like stone beds, bone thrones, etc. Also also, for some extremely common objects or items, it might be neat to have some slight variations; more drawers, slightly irregular shape, etc.
** CODING QUEARY: Can we read the quality of constructed furniture yet? Might be neat to have a Shoddy Tier, Moderate Tier, and Fancy Tier for certain furniture objects too. Shoddy being crude and undecorated, Moderate being of good quality and/or slightly decorated, and Fancy being ornate and solidly made. I think one for every DF quality level is a bit much, but hypothetically that could be nice for the simulationists too.
The round stones look a bit small, and a bit too processed. Quarried stone tends to be large irregular cobblestones or huge carven chunks; a pile of cobbles or solid chunk that looks substantial enough to be able to build an object or wall would be spiffing. I'd even suggest differentiating some of the stone types; some piles of layered chunks of foliate sedimentary rock, irregular chunks of lumpy igneous basaltic stone, and maybe 1 or 2 others, depending on how the terrain tiles themselves end up looking. Also, wooden logs for raw wood, and wood planks for wood blocks, maybe in a few different stack styles, would work as well... basically something to break up the monotony of stockpiles so it looks like an actual storeroom, and that makes the materials look substantial enough to be able to build the things they build.