I think about wood.

Wood is a wonderful countertop for a seating area, because you can lean against it without freezing your belly or arms. A lightly stained walnut countertop would be pretty. Or, if you want stone, you could try something white with brown/gold, so it contrasts with the perimeter countertop and also with the island cabinet base.

For the island granite color, I would go for a lighter granite that matches better with the lighter wall colors and brightens up the room in general.

A light/white colored quartz material would be a nice contrast and look lovely with your white backsplash

Check out Pental quartz BQ 100P Thassos Polished

What is your plan for support for the additional overhang? What is the aisle clearance behind he island currently? You need to solve the logistics before worrying about the aesthetics.

Honestly, it looks like the island belongs in a different kitchen because of the wood color. I would paint it white, so it coordinates with the rest of your wood facing. I think that would make your kitchen look more open and unified. Once you do that, I'd either keep that granite color the same or go with stainless steel. That will bring your kitchen together! Hope that helps.

I was thinking a lighter color or wood also.

Thank u all, I have plenty of room for 3 small to medium stools. The right color counter top and stools should finish the space nicely.