First off, just to be clear, the prints do NOT come WITH frames. Now, personally I like these pieces framed in black, with black matting. That's just my personal taste of course, but if you were inclined to replicate this look, you can get individual mats of different colours (like black) at a place like Michaels Art & Crafts for example (no they do not sponsor me, haha) and then just get a frame or 4-pack of frames that will hold the mat nicely. The prints are all print and cut with an extra 1/8" around so that you have a little bit of overlap onto/under your mat without losing any of the key image. Personally, I like a nice wide mat on the 5x7 prints, and a slightly less bold width for the matting on the 11x14's.
If you plan on getting multiple prints, just use the handy-dandy coupon code reference on this page.
If you plan on buying multiple prints just use the appropriate code at the time of check-out for bulk pricing: