gray is probably a good choice, as is a big shower curtain. wow, have never seen one of these bathrooms in purple! it's a hoot!

I love the purple tiles, but paint everything else white, and get white curtains and towels.

i would do white walls and then grey accents. that's a super cute tile install, i think.

I like the idea of a pale grey, it would make it feel more contemporary

I agree with the white - could go soft gray depending on how it looks with your "non-purple" tiles. It looks really creamy in the photo so I'm leaning more to the white for walls/cabinets.

go white for everything. Add a purple orchid to the vanity! Add some art with some purple.

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I'd do white on the walls-however, since there are about a million different shades of white, I would get a fan deck as nnigrt suggested; what I would do is try to find the matching purple, find the lightest purple from that color family, then ask the paint store if they can take that lightest purple shade a few shades lighter. What you want is a white with the correct undertones.

I like your bathroom...good luck!

I would go with white also, to tone down all the purple. Light gray accessories and gray and purple artwork would look nice in that space.