With your love of retro things, I figured you'd say "Oh it's fabulous the way it is!" ;-P You would have a cow over the hardwood floors. They're dark wood and absolutely gorgeous.

I do have a really nice lavender linen shower curtain, that I'm currently using in my upstairs guest bathroom (which also happens to have putrid pink wall paper.) The two colors don't look that bad together, but then again, I don't have to use that bathroom every day. I also have some nice Impressionist artwork in various shades of lavenders and blues that I've put in that bathroom to try and kind of mellow the pink. Perhaps I could do the same thing there... And at least the shower curtain would cover part of it, over to the window.

A dark warm brown might not be a bad option too, though. And it would give me an excuse to shop for new bathroom accessories! ;-)