Original paint job, for resale and aesthetics.
If you're talking resale, try to find the number of instances where the price was lower because it was in the original paint scheme.
Even a simple aircraft, produced over a long period, deserves to be kept the year it's made.
Should you ever need to part with it, you won't be selling to a "market", but rather to an individual. The paint job will help you choose that person. It is your responsibility as the current owner of this aircraft to ensure that anyone who follows in your footsteps will develop an emotional attachment to the bird, love it like a daughter, and draw the admiration of aviation enthusiasts.
Besides, saps like that will shell out more cash than some chiropractor wanting to impress his dentist friends when he shoots an approach over the fifth hole and miffs the crosswind landing.
Yeah, it's better to have an aircraft that looks just like it was, new, 47 years ago, than one that just looks like it was new 47 years ago.