If you haven't taken delivery yet or plan on ordering you can still get the 6 months of FREE Supercharging only until December 17th all Model 3s now qualify! Call or email your Tesla delivery advisor and give them
I don't think they will have a dark green available as an option. But there might be hope, if it is demanded enough.
Black Matte was an experiment Elon Musk was trying out to see if there was any hype for a matte paint job. According to his twitter he will make Matte black an option at launch. So what I'm trying to say is just bombard Elon musk and his engineers with your choice haha.