Find a way to make the extension work with fewer permission

[feluxe]

Currently the extension declares the following content_scripts config:

  "content_scripts": [
    {
      "matches": ["<all_urls>"],
      "css": ["style.css"],
      "js": ["aligner.js"],
      "run_at": "document_end"
    }
  ],

this requires the "Read and change all your data on the websites you visit" requirement, which is quite tense.

The extension:

• needs to read the domain of the active tab.
• needs read/write access for a persistent storage to save settings for each domain.
• needs to apply css borders to the document.documentElement

Maybe there is a way to achieve this with fewer permissions.