Examine source code of Zen Spring - Blue

{
  "name": "Zen Spring - Blue",
  "description": "Blue version of the Zen Spring theme. This is a ported and updated version of the Zen Spring theme, originally only available for Google Chrome!",
  "manifest_version": 2,
  "version": "3.1resigned1",
  "author": "Nicholas Caito",
  "homepage_url": "https://xenomorph.net",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "zen.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "left top"
      ]
    },
    "colors": {
      "frame": "#67a9db",
      "tab_background_text": "#000000",
      "tab_selected": "#a4ccea",
      "toolbar": "#a4ccea"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{693e259d-836a-45f3-a7db-0be1d6b005cf}"
    }
  }
}