Annoyed with how the AWS console sometimes changes regions on its own, I recently decided that I need an extension to make the current region displayed prominently. After a bit of research, I found the AWS Colorful Navbar [0] extension, which does pretty much exactly what I wanted, but (understandably) requires granting it "This extension can read and change your data on sites" on `://.console.aws.amazon.com/*`, which I'm not willing to give to an external extension. So my solution was forking the repo [1], carefully auditing the code, and then installing it from a local clone (which they actually have a nice explanation for). Going forward, I think I'll try using this approach for all sensitive extensions.
[0] https://chromewebstore.google.com/detail/aws-colorful-navbar...