I'm still trying to figure out what exactly this is, but am pretty sure it is either inlaid linoleum or vinyl. (I can promise it is inlaid, at least.) It has little gold sparkles scattered throughout a random terazzo-like pattern. It shows as a pale creamy beige from afar, and the picture you see here is more of a closeup.
Perhaps a detail shot? Why yes, that is a Canadian penny.
Here's a blurry cellcam shot which gives a truer sense of the colour from afar.
Notice the carpeting remains on the stairs, for now. It's also in the upstairs hall. One room at a time, please! We're fortunate to have hardwood under the carpet there. It's just the main level and lower level that have, uh, flooring issues.