Blizzard will not be altering Diablo III's art style, no matter how many people sign the petition to get it changed.
Some 50,000 fans have signed an online petition to revert the game to something less vibrant and more reminiscent of past Diablo games, but Blizzard refuses to budge on the matter. They've finally responded publicly to the campaign, saying:
"There's no going back now. We're very happy with how the art style is. The art team's happy. The company's happy. We really like this art style, and we're not changing it."
The team at Blizzard chose to implement the current art style to avoid precisely what fans are asking for--a saturated, gray-looking game. According to lead designer Jay Wilson, that particular color palette would make combat more difficult as the on-screen monster count rises, as well.
It's good to see that they are sticking to their guns, because the game looks very nice thus far.
Here's a comparison shot of the three Diablo games, just for fun:

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>:(
You can mod it or something if it's really that bad.
so people are mad because a game looks..good?
yes
yep that is pretty much it kennedy
I'm gonna miss the dark, gothic look. WoW stylization blows, and not having the line of sight shadows will definitely take away a lot from my experience.
OMG colors! wtf are these developers thinking!
It looks like WoW, so I'm one of the crying fans
Maybe its just that I've never played a Diablo game before, but it looks fine to me.
I played Diablo (both 1&2), and I like the graphics.
Good grief...
Q_Q
not bothered never been a fan of blizzard but seems thier happy not listening to the fans, just remember Blizzard thier the ones who BUY your games
For those of you who are unfamiliar with the aesthetics of the 3 Diablo games, I've added a comparison in the body of the article.
looks like Diablo 1 was a hell of a lot lighter....this bickering is nonsense. the game is gonna be great either way
"not bothered never been a fan of blizzard but seems thier happy not listening to the fans, just remember Blizzard thier the ones who BUY your games"
You should also remember just how much money they've got to make a game. So much, and that's all. They can't scrap their plans and waste more money now that they're so far into making this game. Unless you want them to double their budget, have the game be on hold for another year, or whatever, and oh, probably get tons of people fired... If that's what a true “fan” really wants, then Blizzard need *never* bother listening to any of you.
...And looking at those screens, there was plenty of happy colors in both the previous games.
Get a grip, folks. I swear, the world is steering toward utter madness...
Diablo's graphics are brighter than 3. Diablo 2 was sweet, but that was a while back people. Chill the hell out.
Ah well, I always knew that petition would go to waste. It's okay, I guess, I grew to like the style.
I agree it's a little too bright, but what really bothers me is that the game looks almost exactly like Marvel Ultimate Alliance, and not Diablo. Not a fan of their new graphics engine and faster paced gameplay.