Ralph, I've looked at the two cars in build at the moment. The first one, a 4/4 is in Morgan Rich Maroon, see first photo. The second, on a Three Wheeler, is a bit more exotic...the colour from the build book is " 57-65 jaguar Imperial Maroon. PPG/Ditzler Paint Code 50553.
Hope that gives you an idea!
Jays Former Morgan owner. Gone but hopefully not forgotten!