I currently have a house that is completely Dulux Pale Parchment (walls and trim). I want to darken the walls up a bit because the light coloured walls are hard to keep clean. I don't know whether to go one shade darker or two. I went three shades darker in a test area but it's too dark. Thinking of something like Dulux Warm Neutral or Arava or maybe a bit greyer and going Dulux Blind Date or Toffee Fingers. Thoughts or suggestions?