last summer my dad had one checking him out on the patio at his seniors home
it had a red head and and neck that glowed luminescent.he was tripping,thinking it had a light attached to it some how.quite funny.
turned out that some of them have luminescent feathers.
also they are a good animal totem if your into that stuff.
http://www.animaltotem.com/hummingbird.html
http://hummingbirdworld.com/h/totem.htm
they are definately beautiful,mesmerizing somehow
probally not what you were asking for,but hope you like
peace...kent