Mr neon, get the stuff in the baby blue can by Great stuff. The kryon fusion paint I used was in a spray paint can. I coated the foam 3-5 times and then let it dry for 48 hours, then I filled it with water and let it sit another 48 hours. Probably a over kill the next 48 but I did it anyways.
The key to getting the foam to look cool and not like worm turds is spray the foam all over the glass, then use the straw that you spray with to make some cross lines through the foam. Then I put sand and gravel ontop the foam and hit the foam with the hose to speed up the curing process of the foam and to make it not expand so much. Thats a insiders secret when working with the foam around windows. Get it wet and it stops the expanding. So thats how I got the cool real looking look to it.
My mistake!!! I didn't seal around the 4 sides of the foam with silcon. My first go round that I have pictures up of floated up on my and was no good. So I started over and used the red foam can from great stuff. Not as happy with the effects as it cured slower with the water.
So all in all I learned, Use the baby blue can, Silcon the foam down, and call it good!
Erik