At the request of my eldest daughter I printed a Happy face. I didn't check here first to find if anyone else did one since I was showing my kid how the whole process works start to end. Of course it took 8 tries with Green ABS to get the thing to print. The biggest challenge I ran into was the behavior of the green was nothing like what I'd printed in natural ABS.
Anyhow, give it a try, I hope to see a few of these in other colors (I may do a couple myself, byt if anyone else has a go GREAT!