Green isn't that bad at resale.
From experience yellow and orange are the hardest to sell.
My most popular color by sales
Red
Black
Blue
Green
My experience has been different. Don't know if you are talking new or used. I only sell used. Red is most popular because there are more of them available. I have yet to own an extreme green one but have a standing order for a triple bay if I come up with one. Orange has sold very well for me but those boxes were in mint condition. Blue has sold well, and black is ok. Anything with gold trim is outdated and hard to sell. Yellow has moved well also. White,,,,,,,,,,,,,,,oh I would love to have some white boxes.
To the OP, long term red would be your best bet. Extreme green is and has been hot, but it may very well fade in popularity in time. That said, if I had a Taco to paint, it would be extreme green just for the wow factor.