While I think the wood idea is a lovely compliment to the brown-gold veins in the granite,what concerns me is that if the only darker tones are in the granite and the vanity, it may stand out as not belonging in the space. I think I would be inclined to go with a painted vanity, but in more of a vanilla or something a bit warmer than white, to work with your tile. I would not do the walls the same color as the granite, but instead a darker shade of the color, for interest. What color will your faucets, lights and doorknobs, etc. be? You could also enrich the space by choosing a deep color for your towels.

I would just frost the window and not cover it with anything. This will give you light and privacy

Thanks, SJ. Yellow has never been one of my favorite colors and there is a lot of it on the wall. I was considering the multi-yellow though, but now that I've learned it's been discontinued, I think I will go with the light blue. Thanks for the mock ups, ilikefriday!

As you can see, these are pros commenting on your post (I am not). These particular pros are very well known on this forum for their good sense. Since you seem very focused on simply choosing the tile (and do not seem interested in changing anything else in this tiny space), I think that if you want something just to be an improvement over what you have, and you are worried about aesthetics, then you need to re-read my response above recommending that you take the hallway laminate sample to an actual tile store for help in person. I stand by my advice for a neutral, warm color with matching grout. And yes, I do agree that this bathroom is due for a total re-do. You have to actually SEE the tile in person. Even if you order from the internet, you should see a sample first. And your floor area is so very tiny, that almost any tile you choose will be reasonable in price. If price is a major concern, then perhaps you can also consider a simple, white solid sheet flooring. It would be easy to keep clean, and probably the easiest to install (I'm told).