Gotcha. In the pic it looked like the shower would be next to window. My mistake. Anyhow, gonna be a rad bathroom.

Looks good. Would look weird if the dark tiles were on the wall and light on the floor. Dark tile looks “heavier” aesthetically. Also there is no expectation for the joints to line up in this scenario. Post finished pics please.

Make sure the tiles on that stub wall and window sill are angled to drain back into the shower or youre gonna hate life in about a year. Id also suggest 100℅ silicone caulk in these areas.