I painted my cabinets "Grey Matters" by Sherwin Williams and I love it and have gotten tons of compliments. If you want a warmer gray, I also love BM "Revere Pewter" - I went with cooler gray to go with my marble.

I would personally stick to white cabinets... I know, not very original... but I think white works best with timber benchtops... and black/white/timber is a fail-proof/timesless combo imo... But if you wanted to inject a bit of colour... and based on your coastal theme description... then I would suggest maybe duck egg blue?... do a search of "duck egg blue kitchen" in photos on Houzz AU

Don't go with white. While it is easy to replace door fronts and drawer fronts you won't be able to replace the tall vertical panels adjacent to the fridge recess and the microwave recess without pulling out half of your cabinetwork. If you went with a white you wouldn't be able to match the same white as these vertical panels, and the new white would look off next to the old white or vice versa! I'm afraid there is no easy solution that will make the new doors blend in with the old vertical panels, so I would go with a bold contrast colour block that looks good with the white vertical panels, as well as the black granite. Perhaps consider a Piet Mondrian inspired kitchen facelift, by introducing some black edging to the vertical cabinets and a careful composition of blocks of primary colours? Best of luck, Dr Retro of Dr Retro House Calls/Dr Retro Virtual Visits

I would look at a the following cabinet colours. These are Sherwin Williams colours, which is now under the Wattyl brand. Your paint specialist should be able to mix colour. With your busy quartz and the Saltillo floor something soft in the white to pastel green would suit.