This may not have much to do about Diablo 3, thus far, except Warcry tossed a catchy question at Travis Baldree, asking his opinion on the Art Direction of Diablo 3. This was his response.
Warcry: Just for fun, what do you think about the discussion swirling around the "tone and color" of Diablo 3?
Travis: Personally, I think what they've done with Diablo 3 is fantastic. It seems pretty obvious that the mandate was to make the game look like a concept painting brought to life, and I think they've succeeded pretty wildly. The contrast and use of color really works well for an Action-RPG, where there are hordes of monsters and spells, and separation of individual entities is required for satisfying play. I can't wait to play it!
Blizzard is really second-to-none, and I have nothing but admiration for their work. I know a lot of people are lamenting what they see as a move away from the grim vibe of Diablo, but I think a lot of that gothic feel is really sold by a combination of sound, content and story, and the visceral nature of the game - and Blizzard certainly isn't skimping on the visceral if the videos are any indication. I also feel strongly that there's some pretty grim content they haven't bothered to show everyone just yet.