Examine source code of Skimmer Dude

{
  "theme": {
    "images": {
      "theme_frame": "skimmer.jpg"
    },
    "colors": {
      "frame": "#fefc5f",
      "tab_background_text": "#fefc5f"
    }
  },
  "version": "2.0",
  "name": "Skimmer Dude",
  "manifest_version": 2,
  "description": "skimmer dude..."
}