1971 K10 SWB Restoration/Paint Questions?

[dcbrewer61]

Background: I own a 1971 K10 SWB, Im the 3rd owner, I purchased it in 1983. Except for the engine which was originally a Inline 6, which now has a 350CID, the truck is original or OEM replacement parts. The original color was Medium Green. In my younger(possibly foolish) days I changed the color to Black then Chevy Midnight Blue(now chipping). Im in the middle of fixing some rust in the bed, replacing cab supports etc. Im doing the work myself, in my spare time.
The frame, glove box and door frame all have matching numbers, indicating medium green, K10 and SWB. Once body work is complete I was going to paint it myself, this would be the 4th time since I have owned it.. I paid for the paint job last time, it lasted about 4 years before paint started chipping.

Question: Should I paint the truck its original color(medium green) since all numbers reflect medium green? Would that increase its value? Or does it not matter since I do not have the original engine? Im most likely going to sell the truck once I get the cab supports and bed back decent shape.

Any advice would be appreciated! Thanks