For a while now, players have been using mods to disable the “color grading” effect in Battlefield 3. Take a look at the image yourself, it does look a bit nicer. The concern was though that players could gain an unfair advantage using it, or even be banned for using it. Now however DICE has released a statement on an online forum that they would be allowing players to disable it via console command. There will be a console command for disabling the color grading entirely in the game included with the next PC game client update.
We believe that turning it off gives no major competitive advantage/disadvantage. IRNV scope and a few others which turn the image into greyscale or greenscale don’t work properly without color grading and will look real ugly. There will be no in-game UI for turning it on/off. We are unlikely to handle support questions and bug reports regarding stuff that happens when color grading is disabled. As for server settings: we are not currently planning to implement any new ones.
While no word was given as to the legality of player mods, turning it off via console is quite easy. Not making it an option on the menu though prevents widescale use by players who don’t know about the issue or don’t care enough. If you want to disable it, you’re on your own. You can look below to see some of the bugs inherent with scopes, but overall, it does make the game look nicer.