Examine source code of twitter theme

{
  "theme": {
    "images": {
      "theme_frame": "hed.png"
    },
    "colors": {
      "frame": "#00aeff",
      "tab_background_text": "#36a9c9"
    }
  },
  "version": "2.0",
  "name": "twitter theme",
  "manifest_version": 2,
  "description": "this is a sample theme for twitter hope you like it"
}