We try to make every thread in this forum useful if they were looking for help in similar cases. That is why we want to use the English language. Please edit your question in English :)

You can use our webpack starter: https://mdbootstrap.com/docs/standard/getting-started/webpack-starter/#section-introduction It will allow you to edit everything you need and create a new build.

You can also use our theming https://mdbootstrap.com/docs/standard/content-styles/theme/ in order to introduce major changes, changes in theaming will be necessary. Build tool allows you to prepare a custom version of theaming. You can prepare many versions of theaming and, based on the user's choice, change it by adding and removing appropriate classes from the body

If you would like to give the user a choice of any color, it will be necessary to prepare a custom version each time. Then you need a task manager (like jenkins). Such a tool will allow you to make appropriate changes to the files and create a new build in webpack starter.