The 5” counter material is a backsplash. Adding tile above ia a very dated look. Either remove the 5” splash and tile from the counter up, or leave the 5” splash and paint above.

Ah, the belt AND suspenders look for backsplash - you don’t want that. I think what you have is great and a little paint will make it even better. I like the quartz shape behind the range and sink.

For paint you have many options, but The great thing that you don’t want to lose is that crisp contrast between the green and the white. If you choose a pale green you will lose that. If you choose a white to match your Quartz you will lose a little of the definition, but it will still be beautiful. Here is a sample chip for Rainfall. It is close to the SW paint color Moody Blue. I chose a lighter version of it called Delft.

Thanks for the advice, there is also a shelf that goes on top of the range quartz to kinda mirror the sink shelf.

Cool