mixing years

My 65 formula S is not a high dollar car, but my dream is to build it as close to the original as I am able. Doesn't mean I knock other people's cars. I had decided to change the color of mine from gold to ivory, even purchased the paint, but the more I work on the car the more I think it will go back to the original gold color. I have new upholstery, headliner and carpet. I'm hoping when I am finished it will just appear to be a new 65 Formula S.
I don't criticize what other people do to their cars