Examine source code of letsrock

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#595959"
    }
  },
  "version": "2.0",
  "name": "letsrock",
  "manifest_version": 2,
  "description": "a persona with miley cyrus! the only thing to say is LET'S ROCK! :D"
}