Admin Question

This is a bit of a tangent question but I’ve been looking at the admin area trying to figure out if there is some way that I could tag some of the important areas for my client. For instance, it would be great if I could color code the blocks that they want to be editing on each page so it’s easy for them to spot where they might edit and leave the other areas alone. At first I was thinking I could use CSS and grab IDs for the blocks of content but they have similar names (i.e. not unique) so I can’t really do that. I know there are access managers out there but I think they only work ‘by page’ and not by ‘area of the page). Just wondering if you had ever come across a way to either label areas in that back end or lock down some areas of a page while allowing access to other areas of the page. Thx