This mod will include all 42 dyes in a custom container with auto-pickup in the tutorial chest.

Even tough the mod is useful by itself, it is in reality a tutorial of how to use BG3 UTAM (Ultimate Tool for Amateur Modders). 

Visit at: https://www.nexusmods.com/baldursgate3/mods/9035

You can see the video with the full making process of the mod and not a single text file was needed to be opened or saved. You can see at the end how the dyes and container are inserted in the game and the actual result in-game.

Video: https://www.nexusmods.com/baldursgate3/mods/9217?tab=videos#lg=2&slide=0
Hope this is helpful and if you like it and the tool please do not forget to endorse both.