Examine source code of Always Superb New Tab

{
  "name": "Forest fall",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "oie_O4T5Ohc1wQM0.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(154, 224, 74, 0.35)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(77, 209, 81, 0.47)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(52, 214, 50, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c620e4ab-9d46-412f-9ae8-6973e5501eb8}"
    }
  }
}