Becky Harris I believe it was a decal. It was from Designpublic.com. However, for some reason none of their images are loading at the moment so I cannot find the exact link for it and I'm blanking on the manufacturer's name. I'll get back to you if I can find it!
I personally love the very dramatic wall decals like this one. I'm not sure if I'd choose it for a bathroom but I can see how it adds a neat dramatic surprise to the bathroom space. This would be more like hallway art for me personally.
I'm thinking of painting something on the wall. Perhaps not in black, but something almost tone in tone. My new home has small spaces, and repercussions are in order with such big projects.