Perler Bead Sorter Suggestion

I was looking at Scanlime's( http://scanlime.org/ ) 3D Printed Vibrating Perler Bead Hopper: http://www.flickr.com/photos/micahdowty/5407791891/in/photostream/ and I was thinking how best to sort out the different color beads. I thought that if scanlime used one main hopper with the color sensor( http://www.flickr.com/photos/micahdowty/5447634276/ & http://www.sparkfun.com/products/8663 ) and one hopper for each color. There would need to be a way to put the bead in the correct hopper for each c