Hi Tom, sorry for the slow response, I'm a little wrapped up in preparing to leave the Philippines at the moment and haven't been online for a few days.
I have owned dozens maybe hundreds of bikes over the years, but for some reason, red has never worked for me. Even when I raced Honda's I would change the livery to black, it's always been my colour of choice, I've had a few Honda 400/fours over the years and they were blue or yellow but never red.
My vintage Maico's are all red though, that's something I would never change.