While I was playing this game, I didn't like some parts, and i wanted to find some ways to fix this game, but unfortunately, since the game is not very popular, I couldn't find anything. Then I decided to take matters into my own hand and make a few mods myself.
In this article I will tell you how to install them.

BepInEx is a modding framework for video games built on the Unity engine. It allows players to add custom modifications (mods) to their games, enhancing gameplay or adding new features. Essentially, it acts as a tool that makes it easier for modders to create and manage these mods.
Here is the official page.[docs.bepinex.dev]

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I used BepInEx To develop mods and in order for these mods to work you will also have to install it.
Here[docs.bepinex.dev] you can read the official complete installation guide, but I will also show you how to install BepInEx for this game on Windows.

To get started, you must download BepInEx 5.4.23.2 x64 for your platform from this GitHub page[github.com].
For example, in my case I will download
BepInEx_win_x64_5.4.23.2.zip
https://github.com/BepInEx/BepInEx/releases/download/v5.4.23.2/BepInEx_win_x64_5.4.23.2.zip
After you have downloaded, open this archive. it will look like this:
Copy all files from this archive.
Next you need to open the game folder.And paste all the files you copied earlier. it should look like this:
Next you need to launch the game visually nothing will change in the game, but several folders in game directory will be generated that we will need later.

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Congratulations, you have installed BepInEx Now you can install mods!

After you have installed bepinex on the game, you can start installing mods
What does it mean to transfer a .dll file or folder with mod files to the folder where the mods for the game should be stored.
This folder is located on the path: \Pixel Coloring book\BepInEx\plugins
For example, you want to install the exampleMod.dll mod. You just copy exampleMod.dll to the plugins folder and you're done:
also when the mod is in a folder you simply copy the entire folder to plugins folder:
Once the mods are in the plugins folder you can launch the game and enjoy the game.

ConfigurationManager is a mod that allows you to conveniently change the settings of other mods and I highly recommend installing it.
You can download it from this link: https://github.com/BepInEx/BepInEx.ConfigurationManager/releases/download/v18.4/BepInEx.ConfigurationManager_BepInEx5_v18.4.zip
You can find out more details Here[github.com]
About how to install mods is written in the section: Mod instalation
After you have downloaded it you should place it in the plugins folder.
It should look like this:
Once you have done this, you can launch the game and press f1 and the following menu will appear:

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If it appears then you did everything right.

Have you ever noticed that when you zoom in, the camera moves very quickly? This mod was created to fix this.
You can download this mod from this link[www.nexusmods.com]
You need to open the archive and copy the file "BetterDragAndDrop.dll" from it
and paste it into the plugins folder.

Using the configuration, you can set your speed, if you are not satisfied with the current speed of movement, turn on manual mode and set the desired speed.

This mod corrects errors in which, when zooming in, it is impossible to reach the outer pixels.
You can download this mod from this link[www.nexusmods.com]
You need to open the archive and copy the file "Boundary_expander.dll" from it
and paste it into the plugins folder.

In the configuration you can set a different border size

This mod simply makes it possible to enlarge the picture further.

download link[www.nexusmods.com]
installation is the same as with other mods.
In configuration you can set maximum zoom value.

I made this mod because I wanted to draw huge pictures, but unfortunately, due to poor optimization of the game, pictures with high resolution take a very long time to load, lag, and consume a huge amount of RAM.
For example, an image with a resolution of 500*500 takes up 5.5 gigabytes of RAM and takes about 10 minutes to load and lags when there is no zoom(when you zoom in on the image the lags disappear)
In any case, now you have the opportunity to create an image larger than 200*200

download link[www.nexusmods.com]
Installation is the same.
in the config you can set a different maximum image size value.

Че то я под конец устал.