Go grey as advised above, don't paint window frames if they are metal but leave alone, plant sasanqua camelias along the side boundaries (they can be hedged) to screen out neighbours & add greenery plus colour, landscape the front. Don't do white stones as they look dirty after a while and are blinding in the sun. I'd get rid of the stones altogether. If you are a gardener, put in box hedging and some standard roses (yes, I know done to death but they are charming), or draw up something on paper first - play with shapes. A garden makes a house look good.

No I haven't but I have used Dulux Whisper white and love it so much I am now using it on my new build. Nearly finished and it looks amazing. It's a big decision, maybe but a sample pot and paint a large piece of cardboard to move around.

I think a Dulux colour consultant would be a safe bet but obviously the confusion over kitchen colours needs to be resolved first.

post some photos