There is a model for this on the google drive.
It's called Holiday Coro RGB Pumpkin.xmodel
https://drive.google.com/drive/folders/0B2ozCEidtWh3WS1rVFRTQlNCNEE?fref=gc&dti=628061113896314
You can used the attached node ranges for setting up the singing face
I will import this tonight, but it appears to be what I am looking for. I might need to renumber things a bit based on the order that I wired them (although I generally followed the order printed on the coro). I trieid creating a custom model last night, but realized at the end that I wasn't numbering the pixels correctly - I had numbered them as if I was using dumb instead of smart pixels.
Thank you for your help.