Hi Brooks I don't know about the 1963 for certain, but the article in the "Mopar Muscle" magazine for this month about the '57 - '59 Imperials says, "Crown convertible top colors consisted of black, ivory, blue (with blue interiors only), and green (with green interiors only)." The article does go on to say that two-tone combinations were available. You weren't asking for an opinion, but that never stopped me from offering one before: In Texas, I'd go with the white unless there is some "authentication" reason not to. Black top with black interior (no matter how good the a/c is) makes for some warm motoring in this area. Just my 2 cents worth. Joe (also in Dallas but w/o an Imp, yet....)