The way the color mapping works, is that you first take a test frame and a reference frame, and you match the cumulative histograms with a technique called histogram matching:
https://en.wikipedia.org/wiki/Histogram_matching
From the histogram matching you obtain a mapping between the R, G, and B colors in the test frame, and the reference frame, that can then be used to correct the colors of other frames. This should work as long as the color fading or color alterations are similar across frames.
I used MATLAB for the color correction.