Here are the same four decorated with royal icing:
If you don't have a recipe for royal icing, one can be found on my friend Sweet Sugarbelle's blog.
These only took a few minutes to do since the design was already there!
I know of two other times of the year they produce holiday Oreos... Spring and Halloween.
Don't let the designs limit you though!! With Valentine's Day coming up, you could pipe hearts, lips, "X" & "O", etc. The possibilities are endless!!