You probably won't be able to tell from pics because a lighter color car can look dark if the lighting is poor, and vise-versa. In fact, Dodge Hemi Orange and Plymouth Tor Red are the same color. When the light isn't so good, Hemi Orange looks red. Hemi Orange is darker than Vitamin C. They were both extra-cost high-impact colors, so I believe they both have metal flakes - I know for sure Hemi orange does. One clue may be the year of the car you saw. Vitamin C is 1970 only (and 1969-1/2 Road Runners). Hemi orange was 1970 (and 1969-1/2 Super Bees), 1971 and 1972. If the car you saw was 1971 or later, and painted correctly, it could only be Vitamin-C if it was a special order paint car.