We have the black mirror splashback. We love it and it soooo easy to clean

One piece of coloured glass will give almost the same visual appearance but without the hassle - I do however not have a splash back but I do love to watch many programs relating to renovation. You can also have a piece of art work installed behind plain glass - it depends on your taste.

For this look, I think you'd need 1/3 plain tiles but I love this look! I've never seen it before and it's very intriguing.

Hi Davina, either way would look good, so don't stress about it too much. This is a similar set up to our kitchen and I went with A & B both tiled and haven't regretted it. It looks generous and is more practical. Tiles are best around food prep areas as they are easier to clean than a painted wall ... you think that the splash back is what gets the most dirty but the walls around it get their share of splashes as well. In terms of suggestions for tiles - we went with a white textured subway - boring I know, but classic. Using a darker grey grout to match your bench would look good. All the best with your renovation!