Examine source code of Full Moon Rising

{
  "name": "Full  Moon  Rising",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "FullMoonRisingH.jpg"
    },
    "colors": {
      "frame": "rgba(138, 225, 242, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(72, 134, 150, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(73, 134, 153, 0.07)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8d850843-9954-4404-8a0b-32bfd223df95}"
    }
  }
}