I would let your natural elements shine ..match your wall colour to your classic white laminate and be lazy and paint the same for the ceilings so not to distract from your features or you could use your Caesar stone Urban as an inspiration and choose that colour as wall colour..ie go a bit lighter ..since you can play around with the colours as your room has lots of natural light .. Urban is a nice colour..brownish grey.. personally I'd just go white..

Stick with a ceiling white for the ceiling. That with the white trims will give the room longevity as you leave them as is each time you change the wall colour.

I'd paint all the ceilings with a flat ceiling white.

Suggestions from neutral colours: https://www.dulux.com.au/colour/colour-trends/2018/essential Ceiling & walls the same colour is a good choice for square set. There will be subtle hue difference in various lighting situations anyway, which provides depth and makes for an interesting look.