Yeah, the ADR livery looks very '80s in the worst sort of way, but it is authentic, it's representative of a high point in Bottecchia history, and it's in good shape. I'd only refinish if there were some serious corrosion going on under the paint.
I think we need to remember to celebrate the outward tackiness of certain manufactured products, especially if they show great beauty and integrity underneath. Take chartreuse Lamborghini Miuras and your Bottecchia, for example.