Still hoping to figure this out.
Jimmie Rodgers posted the pinmap for the LOL Shield LEDs here: https://spreadsheets.google.com/pub?key=t_EOF_AD8aM_FXxJNH_k8VA&single=true&gid=2&output=html
If I understand correctly, the LOL Shield is using the 12 digital pins as 0 or 1 and not as serial outputs basically there is a combination of 12 pins firing at any given time, which light the pixels/leds. Basically 12 bits if I understand correctly. Now I am thinking I could accomplish what I am after by using a 12 bit parallel input DAC like in the attachment to this post.
Does this make sense? Is there a better way to do this