I agree crisp white and a change of handles would look great. Also a industrial grey would look amazing, especically with the exposed hardware. Obviously this all depends on the rest of your kitchen but you could be more extreme and apply something cheap like chipboard to the back and apply some fun wallpaper to make more of a feature of all the items that you will have on display.

I'm not doing walls until kitchen in. also waiting a while to replace our table with a slightly bigger one. I've always wanted a decent table. only 3 of us so maybe will use end of it for serving up. in the pics the island looks clear and usable. the reality is it gets covered with all sorts. Im thinking of a mobile unit as could put it against chimney breast some of time. It's a developing idea. I'm reluctant to finalise until we live with the kitchen for a while. so much to think about and I'm an over thinker!

I don't think it will date. I do think that some styles of cabinets will date sooner than others. But different colour island than wall cabinets is a timeless look in my opinion. The green is gorgeous. A safer choice would probably be the darkest blue/black (?) And i like that with the white that's on the right in the photo. The other white has a pink undertone it seems and I expect that to give a problem with wall colours for example.

Maybe don't order a blue or duck egg colour and go for a neutral. It will still be possible to introduce colours you love without stressing about getting the most expensive element wrong. Can you have any Dulux colour?