Have a look at Dulux Flooded Gum. Come back and let us know if you want a darker or lighter suggestion. Dulux actually have a colour called Warn Grey but it is quite browny. You’ll need to try samples in situ because colours on screen are only a guide.

This is the wall that I have no idea of what colour to paint it?? Any idea! Kitchen has red splash back nearby.

Judging colours from photos is fraught with danger as they appear different on different devices. And choosing whites is not easy. However I’ve just gone through white selections in my renovation and have warm greys in the house. I narrowed down to Casper White Quarter or Lexicon Quarter. Both will work with warm grey. Sounds like Casper for you as you already like it!

Photo's would be super handy , but as a general rule I wouldn't do skirtings and doors in a similar tone to your walls . Unless you are a kindergarten , you wouldn't do red doors and yellow skirtings with blue walls , but my attitude is that anything that adds to a room along your desired theme is good ! I take it your doors are plain -- even in rental properties of mine , I have changed plain flat doors to ones with 3 or 4 panels , and painted them stark white against painted or wallpapered walls . Half a dozen doors like that are around $1000 , a solid timber front door in a similar style $400-500 -- suddenly , the tenants think I am looking after them ( generally it's done between tenancies , but you know what I mean ) . If it's your own place , even moreso .