Broken Glass Jello

http://foodlibrarian.blogspot.com/2009/03/broken-glass-jello.html Go here for pics.

4 small boxes (3 oz. each) of Jell-O or store brand "gelatin dessert" in different colors.
1 (14 oz.) can sweetened condensed milk (don't get evaporated milk)
2 envelopes unflavored gelatin (that Knox stuff)

For each flavor, dissolve one box of jello in one cup of boiling water. Pour into a container and chill overnight. After chilling the four flavors, cut them into small blocks.

Carefully mix the blocks in a 9 x 13 pan.

In a separate bowl, sprinkle 2 envelopes unflavored gelatin into 1/2 cup cold water. After the gelatin blooms, add 1 1/2 cup boiling water and dissolve. Add the can of condensed milk. Stir and cool. Pour cooled milk mixture over jello and chill overnight.

Cut into blocks or shapes and serve!