I couldn't find this anywhere WITH LED's. all the diy examples I've seen use 3 led's. morley does it with two. I just took a shot at designing it. I'm not sure if thats exactly how morley does it.
(http://farm4.static.flickr.com/3047/5737372908_93f723369c.jpg)
(http://farm4.static.flickr.com/3116/5737403618_09523cbaa2.jpg)
comments welcome. feel free to repost it anywhere.
that is not exactly clear to me...
(http://farm6.static.flickr.com/5104/5737756519_847f116de2.jpg)
better