All such efforts are an exercise in futility. The only thing that works
> is to mix paint that matches a photo or color chip when viewed under the
> lighting the model is to be seen under. Even modern computerized paint
> matching often fails when the finished product is viewed under differing
> lighting conditions, or after aging.
Now THERE'S the exercise in futility in this case!
The Dupont color numbers were obtained as part of a project for Overland Models, which is producing an RS-3 of this particular prototype. You certainly can't expect them to try to mix paints to match every individual's layout lighting.
What Overland is doing with the Dupont match is obtaining a paint sample, then making color chips on brass plates that the Korean manufacturer has to use for making their models for import.
Having obtained the Dupont numbers of the prototype, I was just curious is there was an accepted system to match it to generally available model paints.