Note that there was NO red in 1951.
The first real red Chevrolet was a 1952 convertible color only and the same for 1953.

The 1953 red was lighter than the 1952 red.

The 1951 had a color called Burgundy Red but it actually was a maroon.

In 1951 the convertible was available in black, grey, green, blue and cream.