Baseboard transition to and onto tile

Hello, we are currently working on the bathroom, and since we only want to tile certain areas, the shower area and the toilet, the question arises how to best solve this visually using baseboards.

Wall tiles are beige, floor tiles are gray. Remaining wall: smooth, wallpaper white. (Colors can be swapped arbitrarily just for better differentiation)

Now I would like to tile the shower area and the toilet area with the beige wall tiles all the way down.

But on the sides, I would then have to use the gray floor tiles as baseboards, right? Wouldn't that possibly look a bit strange? How is this usually done in the trades? Also running the gray baseboard tile through the shower and only starting with the wall tiles above it? I have already looked on Google image search but found nothing in this combination.

I wouldn't omit the baseboard because experience shows that the wallpaper at the bottom gets ruined when cleaning.

To clarify, here is an MS PAIN(T) drawing.

Please for suggestions and tips

So we also extended the baseboard in the shower area under the tiles. We had baseboards cut from the tiles, so there is no offset to the lowest point of the walk-in shower. I will look for photos.

I have seen pictures on Google and Instagram, all had the differently colored wall tiles down to the floor without skirting boards and the rest (at the wallpaper sides) with skirting boards in floor color.

Best regards
Sabine

We also discussed all the variants:

Wall tile as a baseboard (the tiler advised against it because they are more fragile than floor tiles)

Running the baseboard through ultimately did not appeal to us, plus the floor and wall tiles were of different thicknesses. So the tiler would have had to use significantly more adhesive under the wall tiles to make the surface even in the end. (Edit: but with us, there is nowhere a sock liner directly continuing into a wall tile; either a door separates them or the two meet at a right angle, so you don’t notice any difference in thickness at the transition)

We then had the wall tiles installed all the way to the floor where they are, and in the rest of the room used the anthracite-colored floor tiles as a baseboard.