Dark green recommendations for sitting room

[Twigwonderkid]

Hi, I have a long narrow sitting room and would like to paint 1 wall a very dark green as in the attached pictures. I was wondering if anyone could recommend a brand and colour name?
Also is it awful to have it on just 1 wall? It would be the wall at the end to try to visually shorten the room. I would love it on all walls but dh says too dark.
Thanks

We have just painted 2 rooms with Valapar v700 paint and the coverage in lining papered walls is lovely 2 coats and it's deep /light and very even. I think preparation is the key.
Also absolutely no Cat pee smells.
The blue is Baby Boots to match the paper and the other in Abbey Walls to go with the paper in what will be our study/ home office

Very pleased and have bought the lovely Valspar musty green Thames Fog for our dinning room. Lovey green walls ❤️

I've used Valspar a few times (would prefer Dulux but couldn't get the exact shade). I would say the coverage isn't great, and the mixer people don't always tell you that some of the shades need a primer, some don't, that's why I think it can be hit and miss. I only found this out bu chance from going to a different B&Q and chatting to a mixer who wasn't very busy.
Having said that we're using Valspar again for living room just because it is the only place we can get the right shade, but definitely worth asking them for the details about primer and therefore which grade of paint you go for.

Gorgeous mycherry! So nice to see. I just beuged my whole house and thought accents would lift it but I have just nothing with any personality like those pics! Time for a change. That's good to know sparkling, might have to go for it if I can't track down this Johnstones one!

Beiged!