I think cherry glass would cheapen it. Have you considered a mirror glass, don't know if I would like to maintain it but others here swear by it. Tiles like Earp Bros suggested look good. I also like the glass mosaics but they might be a bit blingy for your room. I went back to laminate for my new kitchen and I really don't think you can beat it - it just looks so clean and uncluttered, and better still, it doesn't break the bank. Congratulations on a beautiful job.

Nothing wrong with large tiles for a splashback - though all personal preference, we used them successfully in this renovation with a minimal grout and the awesome texture and pattern of your tiles they will not appear big, I would think they would look more like a mosaic tile. Go with what you love and enjoy!

When picking out colors I did have color consultant helping me and had the glass splash back winter calm picked out but now I would rather a tile. I was originally going for a sleek all white kitchen but decided to add the washed knotty laminex to the overhead cupboards but keep the rest white. I am having similar tone vinyl plank flooring through out kitchen and family room area. I was still thinking of a white tile???

I think a dark grey grout would look great, the wider the gap the more the tiles stand out, if it wouldn't cost too much and you had some spare tiles you could do a mock up on a piece of board , sometimes the only way to really gauge things is to actually see it