We had a grey glossy herringbone backsplash installed with Custom Delorian grey grout. The grout kind of blends with the tile. My husband wants to darken the grout color to make the design stand out more. I am worried it will look too busy. We have grey mist granite with grey cabinets at the island and honed black pearl granite with white cabinets on the perimeter.

I have attached Che’s pictures of how it looks now. should we leave it to blend or darken it to make the design stand out?