I have been looking for a 1:18 model of a speedster in Ivory/Burgundy for years and either never find one at meets or they want $200 for it. I know....I could probably get just what I want off of eBay, but that wouldn't get me out to Lime Rock or Palmer or Thompson where the vendors are and I can see cars.
And I agree with Brian - There seem to be regional color choices and/or themes. I remember seeing much more flamboyant paint colors and then (Gasp!) wraps out on the West Coast in the 80's and 90's when all of us "Puritans" here in New England were in Red or Silver or Ivory/Arctic white. Seeing a car in light Meisen Blue or a darker blue or yellow (yellow?) was a BIG DEAL here. I took the middle ground - I built my car as a 356 Hot Rod of the 1960's (as I remembered a couple of cars here in town back then) but stayed in the original color palette with the twist of adding the Pearlescent shimmer. Loved it ever since - It just POPS.
Times have changed and we're seeing a wrap here and there, now, but the original owners in New England (with maybe one exceptional guy) will only go with original Porsche colors for their specific year. Race cars are a different matter and are MUCH more radical in paint schemes. And that other guy? He probably would have gone with the Lime Green.