Examine source code of Dance Hall Days

{
  "name": "Dance Hall Days",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "grid-6.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(28, 0, 184, 1)",
      "toolbar": "rgba(168, 140, 2, 0.76)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(107, 91, 1, 0.68)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(28, 0, 184, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{28fcc34b-c258-4b5c-91de-fe0f5e4fdf43}"
    }
  }
}