Yes, and I was going to suggest have you tried stripping off the handpainted efforts, to see if there is any surviving maroon underneath.
This bike's pics appear in a number of places, with varying shades of red/maroon.
This pic seems rather bright, it would generally be a shade or 2 darker.
(Reds are notoriously difficult to photograph)
The RAL paint numbers in the low 3000's cover dark reds, see if any match anything you can find. ?