This is all we used to make the "stained glass"...I love the idea of real colored glass, but the reality of cost and it's vulnerable proximity to the kiddos made this a much better option...Bonus was the children did it with me. Win, win situation.

How to...Mix glue with drops of food coloring to achieve your desired shade. I thinned it with a few drops of water to help it "self level". Paint it on the "inside/backside" of the window glass and voila~ let it dry...