Hey @dimned,
Thanks again for the reply.
No, I do not mean the dividers, I mean the border around a section. For example, I have created three columns next to each other in Gutenberg. I put one section in each, so I can easily change the background color for all contained text of a column. Now I would like to change the border around these individual columns, so I would need to be able to edit the border color and width of the sections.
This is just a suggestion. If it is not possible to implement this idea, I will still promote the Getwid blocks, because they have helped me tremendously so far!