I have to say that in reality, the moss green color is really great with a lot of depth and is hard to capture. It is strange and unusual with a luxurious touch.
However, it has one disadvantage and that is that it is impractical. King red was much better in this regard.

Impractical? Presumably by that you mean it shows the dirt more than a Kings Red car would. Moss Green will be no different to any dark(ish) coloured car in that respect and IMHO it looks great when it’s clean. It will be a bit like looking after a black car though which IMHO is a labour of love keeping it looking good.
If it was my car I’d either get it ceramic coated or if you’re ’old school’, periodically apply a couple of layers of a good wax or sealant to make it harder for the dirt to stick to the paintwork and make it easier to wash when it does get dirty. And be sure to use a safe wash technique to avoid inflicting swirls on the paintwork as swirls do show up on dark coloured cars when it’s sunny.