For the bathroom wall paint, you can go with Taupe, Soft Gray, Bright White Or, you can match other shades of blue.

And about the brown tile, yeah you can cover it up with a white paint.

Have the rain lightened for bathroom walls

Or you could just go up the color strip to a lighter shade. I used Tradewind in one of our bathrooms. It’s one shade lighter than Rain on the color strip, it’s still fairly heavy on the walls though. Topsoil, or the lightest shade on the strip will offer more contrast.