Examine source code of Crown The Empire Basic

{
  "theme": {
    "images": {
      "theme_frame": "persona1.png"
    },
    "colors": {
      "frame": "#474141",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "Crown The Empire Basic",
  "manifest_version": 2,
  "description": "A basic crown the empire persona for your firefox, with a small photo of all the actual members! Enjoy! :)"
}