Just looking into the entryway to my house and I'd say either black or white.
I have my 2 white Trek MTBs from the early 90s, my black Davidson, my black carbon Kuota.
Why all 4 bikes are upstairs as if I'm riding them is another story. While it isn't a frigid cold winter here, I'm certainly not riding enough to keep 4 bikes at the ready. In the summer I always keep my commuter and one roadie upstairs. I guess I have a "honeydo" chore coming up: "can you put the bikes in the basement already?"