Nope, not the only one. There's another red one hidden away in Singapore that has a black interior. Also chassis #004 was originally painted red. I strongly believe it was built for the Brunei Royal Family, but it did not appear on the Brunei garage list and has never been located to my knowledge. There have been rumors over the years of a red one in a private collection in Monaco, and another rumor that Force India team owner, Vijay Mallya, owns it now but nothing more than that.
>8^)
ER