Examine source code of The Best 4 Ever

{
  "theme": {
    "images": {
      "theme_frame": "4favreheader.jpg"
    },
    "colors": {
      "frame": "#999999",
      "tab_background_text": "#5d20bf"
    }
  },
  "version": "2.0",
  "name": "The Best 4 Ever",
  "manifest_version": 2,
  "description": "The best 4 ever, B. Favre."
}