Examine source code of Techrayss New Tab

{
  "name": "Autumn Forest",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "oie_WhZYsOUEBUaw.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 250, 250, 1)",
      "toolbar": "rgba(47, 181, 98, 0.42)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(203, 214, 55, 0.34)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(219, 85, 87, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{58646b79-e904-4670-9dcd-7ae2a307f52a}"
    }
  }
}