I think it would be prity simple to accomplish. I think some of the designs would require some html editing and some sliced images but not too difficult. When I get some time I might give this a go since I have the ribbon design already designed.
I got a spare 10 minutes and managed to get the ribbon affect. I haven't styled the ribbon thoroughly yet but as you can see you'll have to apply a 3 part image fixed images on the left and right and a repeating image in the center. As stated, it's working and code in place but the ribbon images haven't be properly styled in photoshop but i think what you are wanting to do won't take you longer than 10-15 minutes to accomplish pending you are familiar with a graphics editor or you have a pre-designed image sliced and ready to apply.