I love that top one, NotSpaghetti.
My daughter has just had her bedroom decorated in a lovely olive green. It's quite dark, but as she says, bedrooms are supposed to be dark. It looks really good, IMO - she lifted the colour with a duvet cover and curtains in white with a green 'drawn on' pattern and a white rug.
To think that London, or anywhere else for that matter, does not belong to any one demographic