A member of my design team forwarded me your question, and I thought I would address it directly to avoid any confusion!
There are actually two answers to your inquiry! First, the projects in the gallery are created by designers I chose based on diversity of style. When they create samples they are given "free-reign". This meaning that they can incorporate any other products they like with our stamp images. Because of this, they have used patterned papers that we do not carry. Most of the projects include supply lists, and you should be able to find the source for any specific paper there.
Second, you may have noticed that we have a "paper" button on our front page. This is a type of product we are still in the process of perfecting. We are expecting to have our first patterned papers hit the market in late summer.
If you have any additional questions, feel free to ask! I will be sure to check back this afternoon! Thanks for your interest in our product! We really appreciate your generous support!
Nichole Heady
Papertrey Ink
www.papertreyink.com