I would be more concerned with how those two cabinet colours work with your wall colour and concrete palate. I think one will be more favourable than the other if you can put samples together. Also keep in mind what lighting you'll be using. Since if you have cooler colours then 'cool white' 4000K lighting will look best, likewise if you have the warm Alabaster colour then 'warm white' 3000K would be best.

What have you committed to already? as to be honest I think it would be worthwhile having a rethink as you live with a kitchen for a long time. Have you thought about having the darker cupboards on the lower level and another lighter colour on top? The lights could be dust catchers which can happen with a moist kitchen environment. Are they cut glass as you could go with something the same shape in a plain finish. With the splash back you could go for a subtle silver grey metallic glass, but your bench top looks quite yellow / pink in my monitor so take a sample to check against. I like a bright splash backs but it all depends on the amount of the colour and how it works with your other colours. If you go with painted glass there is no limit on what you choose. Overall it feels as there is a beige theme and a grey theme which you need to ensure there is one element that can draw them together - this may be your cupboards but it is hard to tell on the computer screen. A brand new kitchen is a unique opportunity to have what you want and to find harmony in the choices so it is worth taking the time. All the best.

Design suggestion- perhaps rearrange the upper cabinets so that 1 double doored cupboard sits over each of the desk areas. Then consolidate the open shelves in the centre of the uppers. This will help to balance the wall and help the uppers to look less visually heavy.

Thanks Malcolm. We have had a quote to have 3 sides of the island colour changed as 2pac but it is a bit expensive, which is why I was looking for an alternative. It may be something that has to wait for a while.