Examine source code of Blue Zorin

{
  "name": "Blue Zorin",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Group 1.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(36, 36, 36, 1)",
      "toolbar": "rgba(255, 255, 255, 1)",
      "bookmark_text": "rgba(36, 36, 36, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(36, 36, 36, 1)",
      "tab_line": "rgba(10, 165, 238, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{822055a8-f643-4ef2-a900-d390b5ac57eb}"
    }
  }
}