Hey, I can't help it. Those tiles have been in the classic set for a while, and I just felt like using them. Thanks for the comment though.
The Pure tileset.(Whatever it is that Pure means).
Here is the newest official version: http://www.purezc.com/index.php?page=tilesets&id=42
Here is a link to the newest beta version: http://www.box.net/shared/yzbfbe8840