Basically any game where a gun is present is going for that kind of look and given the amount of games focusing predominantly on the shooting, its a really tired "art style" that needs to go away. Hell, even the new Batman game went out of its way to give everything this metallic, grey-esque shine to it and doesn't work.
What "look" are you talking about in first person shooters? ALL modern FPS are very vivid with colors. Titanfall, CoD, Battlefield etc., (even the recent Wolfstein New Order) all have a very colorful palettes. So I have no idea of what you are talking about.
As for Batman. That game has always been darker and less saturated and rightly so given the context. However this last title, actually, is more vibrant in colors than the previous ones (look at the various gameplay trailers). So I really have no idea what you are looking into but it's exactly the contrary of what you are saying. Please provide me an example of a FPS of the last two/three years with a desaturated palette. It would be much if you can find me one, while if you go back 8-10 years you could find a lot of them (some titles even spanning a complete IP, as for example the STALKER games).
P.S: "metallic grey-esque shine" has nothing to do with color palette. The two things are separated.
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reshade and sweetfx looks like shit most of the time
they take pictures of the best looking places in the game
Listen, I understand that you don't like SweetFX but would you please (please) stop lying? I never took the "best shots" for my preset (I actually suck great time at taking screenshots and I always did) and I assure you that in comparison to how the game looks in those screenshots in game it is three times as better (practically all my shots are taken from White Orchard or Velen that are the two areas with the worst lightening/atmosphere in the game; there's neither ONE shot of Skellige). So please say whatever you like about but stop posting lies.
Let's make a bet, go here and use this preset of mine:
https://sfx.thelazy.net/games/preset/3817/
Use it and take a shot, whatever shot you want in the game, casually, and then let's see if it will look worse than the same one in vanilla (use Scroll Lock to disable the effect and take the shot again, this time without the effect), or if your shot will look worse than the ones I posted in that page. Do we have a deal? Let's see.
You can have the opinion you want on SweetFX but if you then accuse Reshade authors of fabricating shots appositely for their presets to look good then I have a problem with it given I'm an author of a preset myself and I've never done something like that,