Examine source code of Aqua Washout

{
  "name": "Aqua Washout",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "Aqua Washout.jpg"
    },
    "colors": {
      "frame": "rgba(81, 141, 143, 1)",
      "tab_background_text": "rgba(242, 242, 242, 1)",
      "toolbar_field_text": "rgba(102, 143, 137, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{73c2c802-ebaa-4c18-afcc-205cf6ee7049}"
    }
  }
}