Hello Stan. I wonder if it is possible to get a metallic paint mixed with the correct period Tobacco Leaf colour, but of course with added depth and sparkle? Doesn't necessarily have to be Tobacco Leaf, you could could presumably get any seventies colour 'updated' as a modern metallic paint. Just a thought.
Scarab blue looks better with a black interior, and whilst Saffron is an eye-popping colour it wasn't available in Europe. If you don't care about being a stickler for originality I would look at the contemporary colours from Audi. They have recently offered some really nice variations on the colours Rover offered forty years ago. They had a lovely rich wine red offered on the TT in 2008, and a few really nice shades of blue. The metallic blue on the current RS6 is a modern twist on Scarab, but again would look better with a black interior.
My current hot favourite for my own project is BMW Monaco Blue metallic. Looks crap in most of the photos I've turned up on the internet, but great in bright sunlight.
I expect my four wings back from the panelbeater next week, after having had them gently bead-blasted, new metal let in to replace the corroded areas, a lurid lime green anti-corrosive base coat and finished in high build primer. Hopefully I woun't have too much sanding to do. Just need to find the money for my respray now...
My friends at ClassX Automobile here in Berlin have just refinished a Daimler in Regency red. Monza is a better red though, always look good if well maintained.