Examine source code of Jbbess.com New Tab

{
  "name": "Blossoms Flowers",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "1221.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(163, 33, 33, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(42, 176, 82, 0.46)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(31, 191, 36, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{6aff3c52-4015-4321-ad6f-ec9da7dd68c1}"
    }
  }
}