Hmmm, I guess that's not the same kind of thing I saw.
<a href="http://photos13.flickr.com/19227211_5b8abd983a_b.jpg">Here's a couple</i> <a href="http://photos15.flickr.com/19227212_0a32228f97_b.jpg">shots</a> of a rainbow-like thing I saw over Phoenix a couple months back.
I'm still not sure what it was. Just a very dense cloud acting like a prism.
And did you see <a href="http://www.msnbc.msn.com/id/8631798/">why the sky is blue? And why it <i>really</i> isn't</a>. Cool article.