Examine source code of valentines day 2011

{
  "theme": {
    "images": {
      "theme_frame": "hearts-background.jpg"
    },
    "colors": {
      "frame": "#ea08ff",
      "tab_background_text": "#fa0505"
    }
  },
  "version": "2.0",
  "name": "valentines day 2011",
  "manifest_version": 2
}