OMG, our home styles look very similar. But I have to confess, our walls are a similar color (a bit more khaki, a touch less warm, perhaps?), and we've stuck with it because it allows flexibility in furnishings, and we have lots of colorful art (and an orange sofa!). But I hear you. Our basement is largely unused these days, and it's a repository of furniture that's a bit dated that came with us from our old house, plus a random piece or two from my mom's, and some pieces we bought when moved in 13 years ago that no longer suit our style. Oh, and the carpet is stained and stinky after 13 years of aging dogs. But it's low down on the priority list.
But I'm in admiration of what you're tackling! Post updates, please! I find it very inspiring.