I bought three types of tiles yesterday. I laid some of them out on the window sill to get a feel for them. I’ll probably go with a grey grout between them. All three are kinda natural-looking stone, which appeals to me. The other option is to go with glossy glass tiles, which look pretty cool, but I kind of feel like I want a more natural look in here. I’m leaning towards the grey slate tiles on the left side. They are quite uneven in texture and flatness and thickness, but I find the randomness of them very cool.