You were very clear: I just suggested you to create a paragraph style including your paragraph shading options and add shortcut to be able to quickly access to the pargraph shading options.
Anyway, you can also add directly a shortcut to the paragraph border and shading window by customizing your shortcuts set:

Hi, thank you. I would need to make a paragraph style for every new document, this is not a fine idea.
Now I discovered the problem, it was the 'translation' of the main menu of the paragraph options, 'Bedienfeldoptionen' was not really logic for me. So I could assign a shortkey directly.