where were the white subway tiles purchased?

Now this is a question from a white ago. I feel okay helping. We never want to jump in. Always allow the poster time to respond. So his is our run down on the shower:

They have capped it with a trim either an "ogee rail or a chair rail. We have both. Here is the chair rail.

Then Basketweave is cut to create a border or you could skip that and use a pre-cut border which saves a lot of time and money. That are on here: http://www.thebuilderdepot.com/borders.html 

Then finally a 3x6" Ceramic Subway Tile on this page. But given this is over a year old 4x12" has actually replaced 3x6" for the Subway size of choice. I would go for that instead in the Ceramic. A great choice with white grout. Or go for a glass tile. Both equally non-porous and will hold up well for decades.

Don't forget to seal that shower floor every so often!