Examine source code of cory simple

{
  "theme": {
    "images": {
      "theme_frame": "cory-firefox.jpg"
    },
    "colors": {
      "frame": "#7d7d7d",
      "tab_background_text": "#000000"
    }
  },
  "version": "2.0",
  "name": "cory simple",
  "manifest_version": 2
}