For the short period I was using visual studio, I was a big fan of this plugin: https://marketplace.visualstudio.com/items?itemName=johnpapa.vscode-peacock
It essentially lets you specify (or randomize) a window title, status and sidebar color for a project. This lets you then quickly identify the window you’re looking for by its color. The VS plugin has over 300k installs, so I think it’s worth trying to replicate in ST.
I’d like to develop a similar plugin for Sublime Text, but as far as I’m aware, Sublime Text doesn’t have an API to dynamically change CSS properties of a given window. I could be wrong though, so I’d appreciate any tips/pointers.