The DYRL game for the PSX showed that the red parts of the armor on the VF-1S of Roy were yellow, in Hikaru's VF-1A stayed red, Max blue and Kakizaki green, I wonder if the chest numbers would be something like 1 for Roy with the 001 on the arms and leg, 2 for Hikaru with the 011 on arms and legs and so on, on a DYRL numbers and color scheme.
With the serie colors I am not sure but I think that I have seen a model kit of Millia's Vf-1J in GBP that was colored complete red.