I think either can work. Dark benchtops can give a more dramatic look.

dark windows can look great in certain contexts, but not on this type of residence. Lighter is always better on these. The problem with the tiled sills is more the window colour clashing with them, rather than the colour themselves. I'd be inclined to change the window colour rather than paint the tiled sills. The orange roof colour should be reconsidered because the orange overload is due mostly to this aspect. Perhaps it may pay to invest in some professional design/architectural consultancy to help balance all the various elements involved - they all need to be working together and be complimentary, and colour will play off adjacent aspects one way or the other and it would be worthwhile for you to get experienced advice and work through options. Best of luck Cheers PD :)

I have a very similar design to this. I have done the same benches and cabinets in both kitchen and butlers for continuity, but the island is different. With your fridge being in the butlers, you would probably have people walking in there all the time, so I would do the same cabinets in there so that it all flows.

2400 is a good space between your windows to add a cabinet. If you had a 600 depth to bench height and narrower above, (350 - 400)it would probably not close the space in too much.