Bonnie Burton took this photo of a Darth Vader helmet on display at the Star Wars Celebration IV convention. A bunch of artists were invited to participate by painting a helmet.
Walking through The Vader Project exhibit at Celebration IV is like taking a stroll through a Darth Vader tribute done by the coolest lowbrow and urban artists on the planet. Frank Kozik, Paul Frank Sunich, Marc Ecko and Urban Medium (among numerous others) gave Darth Vader's helmet a hipster makeover. As fans walk through the exhibit they can see the artist's own unique style featured on each helmet. Whether it's a Tiki-inspired design from Shag or a girlie 1940's style pinup from Marc Ecko — it's apparent each artist took time to pay special tribute to the headwear of the Sith.
This site has more information, along with a video about the helmet show. Link