Examine source code of Strange Bat

{
  "theme": {
    "images": {
      "theme_frame": "FirefoxPersona.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#a10202"
    }
  },
  "version": "2.0",
  "name": "Strange Bat",
  "manifest_version": 2,
  "description": "Strange Music Symbol. All rights to image are Strange Music."
}