Well, a quick search revealed not much . . . this one caught my eye though

http://blog.usticke.org/cimg1063.jpg

More seriously though, here are a few you might want to tinker with and maybe try editing the image itself with photoshop?
They look mostly to be figurines or sculptures however
http://www.sithclan.net/SC4/write_access/depot_images/news/miniature/UHP_preview_darkTrooperPhase3.jpg
http://www.rebelscum.com/potf2/sweudarktrooperdfcardfr.jpg
http://www.rebelscum.com/potf2/POTF2EUdarktrooperfr.jpg

http://www.planet-battlefront.de/custom/uploads/Artikel/Battlefront/Einheiten/Imprium/dark_trooper.gif <- This one is from Battlefront . . . and is white
You could edit it to change colour, but I dont think it really looks like a Dark Trooper
http://starwars.wikicities.com/images/4/49/Darktrooper.jpg Possibly the best one I've found

Hahahaha Yes, you to stumbled across the much feared hippy-trooper on your googling-travels. They wander non-threateningly upto rebel detachments before unleashing the full-wrath of Imperial might by going 'Hay man! Chiiiiiilll! Life's like sooo round!'

But anyway, seems your searching was pretty simular to mine...

Edit: Has anyone seen http://starwars.wikicities.com/images/4 ... rooper.jpg one uncropped?

These are amazing! I can't wait to see more!

Wow, old thread!

My version of the Dark Troopers. Due to missing good pics of real ones, I took some Blood Angels Space Marines.

Don't make me do it Eagle. Don't make me use the unit colour tool in Dawn of War to make a better card...

( jk )

Well I thought the colour red would also fit, because the emperors guard also wears red. Those three guys here aren´t computer-modells, these are sculptures.