Examine source code of Fire Mountain

{
  "name": "Fire Mountain",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "FireMountainH.jpg"
    },
    "colors": {
      "frame": "rgba(8, 8, 7, 1)",
      "tab_background_text": "#ebf700",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(233, 245, 0, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.07)",
      "toolbar_field_text": "rgba(242, 255, 0, 1)",
      "tab_line": "rgba(242, 255, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{73ad5ba2-33f3-4b2b-8524-783cecb0ccd8}"
    }
  }
}