Examine source code of Star Wars Miniatures

{
  "theme": {
    "images": {
      "theme_frame": "Persona_Header.jpg"
    },
    "colors": {
      "frame": "#4a4a4a",
      "tab_background_text": "#170606"
    }
  },
  "version": "2.0",
  "name": "Star Wars Miniatures",
  "manifest_version": 2,
  "description": "Star Wars Miniatures. I created this to fit to my own Firefox. I used the \"Mozilla Labs\" sample Header & Footer."
}