White. Plain.

Who died and made the contractor a designer? There is movement in the flooring, you don't need more. Did the contractor speak with a fabricator? Does the contractor know where any seam may go? Does he know if you would need more material for his selection to have any veins line up ?

My bet is he does not know.

Ask the contractor if there will be seams in your countertop. If the answer is yes, there is a good chance that the lines in your countertop will not match up with each other. Jan is right. Make sure you are both very clear about this because you might have to live with something you really dont like. Safe choice is a solid color counter good luck

Agree, solid color.

I agree that you don't need any more competing patterns. A solid colour would be better. I might worry that a solid bright white counter would make the floor look a little dirty and dingy in comparison, though. I think a light grey might look better with the floor. My top pick would be a zinc countertop. Zinc has such a lovely soft glow that would be perfect for a modern calm zen feel, and it's naturally antimicrobial, which is always a plus in the kitchen.

You used the word "contour" twice. Is it just a typo for "counter", or are you planning the counter to be contoured in some way, i.e. curved in some way?

Why are you taking design advice from your contractor? The only time that might be a good idea is if you really know the contractor's taste or if you happen to be married to him/her.

That counter will look like you tried to match the floors, but failed.

Go with your own vision of white counters for this kitchen and not what the contractor thinks you should use.

Another vote for white, but be sure to bring home some samples to match with the floor tile -- looks like an off-white might be needed. Cambria Quartz makes something called Newport that's an off-white with a very light white-on-white pattern that might be worth looking at too. Just be clear that "solid white" will mean a manmade material, so look at quartz and Corian.

She means countertop I’m sure. Must be ESL speaker

I agree with everyone - be very careful with marble effect / veined patterns! i would go for solid colour but would sincerely rethink white as it really will make floors look dull and even dirty. i agree with zinc or soft grey - or another neutral that ties into the zen calm kitchen colours like off white. My vote is for the zinc, very modern but chic and adds another level of interest without any busyness

Would not mix that slab choice with your floor.

Thank you everyone for your help. I definitely think this is a better choice