I'm assuming you mean the travertine is NOT the pink tile you are talking about?

Do you have photos? What is it that needs to be covered by the peel&stick?

Are you aware that most peel and stick are considered "temporary"? Especially in high humidity areas such as bathrooms? And they really only work well when installed directly over plywood or concrete (like cement board) and should not be applied right over top of porcelain/ceramic/stone tiles?

Yep...like latifolia suggest. Paint is the EASIEST option.

Flooring is a pinkish cement tile I believe. I was looking for a temporary solution and I saw on Lowe’s YouTube channel “the weekender” put peel and stick tile over tile so I was going to give it a try, if I have to rip it all up and lay down tile I will I was just looking for an easy way out lol. Other than that I’m just having a hard time picking a material that will go well with the travertine shower, thank you for your response!!

What color would you paint it? I’m Renovating our house one room at a time the shower is nice but travertine is not really my style but trying to make it work

As others have mentioned, change the wall color and eliminate the gray accents (i.e. rug and shower curtain). The gray just doesn't work with your travertine. Look at BM Bleeker Beige or BM Shaker Beige for the wall color. Then, purchase a solid color rug and shower curtain.

Valerie, chalk this one up to experience and repaint. Any number of warm colors could work, I think, but not cool grey.

There is nothing wrong with the floor tiles or travertine - it actually has an upscale look to my eye. You could probably do a cream color and then, as Annied suggests, get accessories to match.

You can change out the trav and the floor tile to get a current color scheme. The door will be painted also.

I have Sherwin William's champagne color in my bathroom to match unfortunate brown tile floors. I think it would be a nice compliment to your current tiles and shower. Plop in some nice accessories, and I think your bathroom would look wonderful!

Take a look at SW Relaxed Khaki for your paint color.