I have implemented a new feature that allows players to customize the appearance of their backpacks dynamically.

You can now use the command /backpack texture <base64> to obtain a "Texture Applicator" item.

Simply click on any existing backpack in your inventory with this applicator to instantly update its skin.

Note: This update adds new message keys for the texture feature, which I have already updated in the language files. You can go ahead and clone the repository and zip the project now.