DIY article:http://chemistry.about.com/od/chemistryhowtoguide/ht/colorbubble.htmHaven't tried it yet, but if this is all it takes, I hope this guy didn't actually spend $3 million on it! Abusive comment hidden. (Show it anyway.)
http://chemistry.about.com/od/chemistryhowtoguide/ht/colorbubble.htm
Haven't tried it yet, but if this is all it takes, I hope this guy didn't actually spend $3 million on it!