I'm pretty sure that's just as of 2000
We were always a Peter Jennings family when I was growing up, and I distinctly remember Democrats as red in 88, 92, and 96.
I was flipping around so much in 2000, I forgot what TV stations used what scheme. I think Bravo used forest green and lemon yellow accented with art deco stencilling.
Hmm. I watched CNN in 1996 and 2000, and know for sure that Democrats were blue. I have tapes from those elections, so I definitely know this. From 1984, 1988, and 1992, I watched the coverage, but don't remember which colors were for who.