With my new blog, I decided to dust off an old printed list of developments, before LED's took off so much that they could no longer be followed. We've come a long way from dim red indicator lights!
http://erictb.wordpress.com/2012/06/21/my-chronology-of-color-leds
http://erictb.wordpress.com/2012/06/21/my-chronology-of-color-leds