In Mission Control, is there a way to set-off desktops, to distinctly differentiate them?

I regularly have 5 to 8 desktops open. Until recently, I’ve been using them for apps that are visually distinct, so in Mission Control I could tell which desktop had which apps and documents simply by glancing. Now, however, each desktop hosts the same app and all of the desktops look alike, making it difficult to tell which has which project on it. (I shift them around based on priority as the week goes on.)

I’m wondering if there’s a way to highlight or otherwise set-off desktops——say, by having different colored borders around different ones, much like tags work.

(I’m running 10.15.6.)

Thanks!