Thanks for your help, everyone! On Sunday I got fed up with it and ended up painting it the same light beige as the rest of the house, Valspar Homestead Resort Buff. It goes perfect with the bone colored toilet and sink, but it seems to bring more of a yellowish tint to the ugly plastic tile than I'd like. I don't think there's anything that will make that tile look good. LOL! Hopefully once I hang a shower curtain, the tile won't be that noticeable. I like the idea of dark accents to break up the boring beige a little. I still have to do the trim and then I'll remove the blue tape and post a picture. This is a mobile home, by the way, which is why the tile is plastic instead of fiberglass. The sinks in the bathrooms were an even uglier color plastic if you can imagine anything uglier than that tile, so I replaced them with bone colored ceramic sinks. Can't do anything about the tile though, as the newer mobile home shower surrounds don't fit the older models.

Pretty! I am doing a similar tile in my bathroom remodel right now. Are you only open to Sherwin Williams? Because Benjamin Moore has some beautiful gray bathroom colors, better than SW in my opinion. I’ve done a lot of research and made a lot of mistakes lol. Here is a good article. I’m doing gray owl, myself. https://www.kylieminteriors.ca/the-9-best-benjamin-moore-paint-colors-grays-including-undertones/

I agree with Cpartist"s layout and like moving the closet over as suggested by D M so that bedroom 3 has easier access to the bathroom. Do you have room to have the toilet face the tub and add a linen cabinet next to the toilet? How wide is the tub toilet area?

needs a littlle more attenyion than just the tile, heating and paint. Are you really lovin' that tub and tile surround???? One note of caution with the heated floor and tile installation. Lay down the heating material on the entire floor. Saving money by only heating a 'path' will result in uneven floor tile. Just a little uneven edge on a tile is a pain on a tiled floor. This is a bare feet nuisance easily avoided.