(Blue) Suggestion: Change color for signal chart on channel 1C

[Jorgeminator]

I have noticed that the yellow color used in the signal charts for channel 1C is really difficult to see against the white background of the lightningmaps.org signal charts. Orange would be better, but since it's used for one of the E-field channels on System Red I am not sure it's available. Are the colors coded differently for each board revision, or are they shared?