@love-self-harm what I've meant is to add more saturation to the game itself (not the icon, rather the game).
Here, I'll show you what I've meant (using CS:GO as an example)

Any possibility to add the custom color just for T6? I don't want to have it on while using PC for other games/stuff.

Since it writes configs locally, (if I recall correctly) it means you can save them anywhere and transfer them over to other PC.

https://www.youtube.com/watch?v=F11vPkfLy7w

good for writing seminary work, or some random shit in general.

Have you used any mod menus that required additional injection?

Do you get any errors?
Maybe you put it in the folder with some specific characters?

NikolaiHansen17 the correct folder is the folder where you downloaded a game.
For example, you downloaded a game in C:\Users[Username]\Documents\pluto_t6_full_game.
In Plutonium launcher, you have to set that folder in order to launch Black Ops 2.
You'll recognize every game by it's short names, with T4 being WaW, T5 being BO1, T6 being BO2, and IW5 being Modern Warfare 3.

This is temporary solution, but effective one.
Open command prompt
Type out the following:
taskkill /f /im plutonium-bootstrapper-win32.exe /t
Relaunch Plutonium.

You can also make a script:
Echo off
color 0a
taskkill /f /im plutonium-bootstrapper-win32.exe /t
echo Relaunching the bootstrapper!
start [Insert path where Plutonium launcher is located]
pause

Your account - your responsibility.
Staff do not do unbans for silly mistakes.
Cheaters stay banned permanently.
Next time, read the documentation before injecting/modifying game files.

Spoonerstreet weird shit honestly. Do you have any weird characters in the directorium where you downloaded BO1?
Also, you can help the admins by uploading the crashdump with the ID.

Tenorio's set it into Plutonium launcher, by pressing option "Game settings", press Select Directory, and choose the folder where you saved the game. In your case it's:
Gustavo - Pessoal\Documentos\jogo\pluto_t6_full_game

K I X Do you have any weird characters in the username of your PC?
I assume that you've set your PC to be in English.
Plutonium cannot properly read characters such as š, đ, é, ш, ћ, etc, so that might cause the issue.

K I X Honestly, the issue's kinda weird.
Do you have any weird characters in the name of any folder?
What are your PC specs?

SKZ19992 PC Specifications?

Ledyba KB&M, as I find controllers kind of unreliable in terms of fast flicks. For fun times in Zombies, I might consider getting an used controller.

As hinder said, update to Windows 10. After updating to Windows 10, download DirectX and Redist.
DirectX: https://www.microsoft.com/en-us/download/details.aspx?id=35
Redist: https://aka.ms/vs/17/release/vc_redist.x64.exe
Windows 7 is not supported for obvious reasons.

HerrKuchen yes, you can play Black Ops 2 with no key. However, it's recommended for you to download via the torrents.
BO2: https://plutonium.pw/docs/install/#installing-the-base-game-bo2
It already comes pre-installed with DLCs.

SaladFingersUwU Could run, but old CPU. GPU is half-decent for today's standards, but still runs most of the games.

NckEclipse Wrong forum to ask on. Plutonium Devs aren't deving IW7 client. Other devs do, and you can check the status somewhere else, such as Reddit.