This is great! Only feedback would be to support a set of dark themes.

Would be nice if you could choose a darker color palette.

This extension is as simple as it can get. Zero configuration, just a nice default palette making it easy to distinguish browser windows.

+1 for differentiating open tasks and thought processes

I've been looking for something like this for a while. Very similar to the peacock extension for VS Code and a must have for when OSX spreads windows.