Hi I definitely would not paint the walls in a site, black colour. The walls would then look ugly against the dark tarmac. You need a contrast and I would keep the walls the same colour as the house. I would introduce a bit of black to the top capping tiles on the pillars to echo the black strip on the bottom of the house

Hei. All looks fab to me! I wouldn’t change a thing. 😊 But I appreciate change is good, sometimes. If anything, I would perhaps change the coffee table, even though you hadn’t mentioned that. It just looks a little ‘stark’.

Can you post some photos and more details?

Hate to throw a spanner in the works but why that wall? To me it looks like the space above your cupboards is crying out for attention. You’ve got a fab space to play with their so of it was mine, I’d match the tiles with paint and use the cupboard tops as shelves for display of lovely ornaments or rarely used (but aesthetically pleasing) kitchen and/or dining pots.....and in answer to the original question have the art wall white. Other than my suggestion if you leave the cupboard walls white then i‘d paint the art wall in a fave colour for impact (I see you have some red stools, go daring!)