Would like to keep indigenous trees running along fence. Would like to build entertainment area at one end, entrance at other end. Need a large water feature and some nice flowers and shrubs for wedding photos?

Could you try taping up some large pieces of coloured paper (the colour you like) in an area that you see from different angles and areas that look into the kitchen area. Live with it for few days or week; then go out of your comfort zone and tape up, say black and do the same. Check it out, live with it and see if that might give you some inspiration on the colour. I’m not keen on the stripe but I’m also not keen on the fridge. Bigger and more modern.

I love your view! There's options here, and they'll be led by where your blinds are installed in my opinion. It looks like you might need to install the blinds to the face of the architraves, in which case, I'd be selecting pale blinds to sit outside the window as they'll, hopefully be up out of the way most of the time. If they fit inside the recess, then I'd select dark.

A suggestion. Since you have windows in the study with views, I would utilise those views. I would block up the small arch that is from lounge to study. Open up the large arch, and make a walkway. Put fridge in blocked up arch. Continue kitchen benchtop and cupboards around the entire study area on solid walls. On the window parts continue an open counter. You could have stools here to look at your views, and this could be used for working on a laptop with a wifi connection to a printer camouflaged in cupboards. Or just use it as a wonderful place to sit and directly take in your views. I would also reconfigure your lounge so you are facing the study area when seated. Photos attached for visual explanation.