Examine source code of Stacked Deck

{
  "theme": {
    "images": {
      "theme_frame": "SDSkin.jpg"
    },
    "colors": {
      "frame": "#ff5900",
      "tab_background_text": "#e80c0f"
    }
  },
  "version": "2.0",
  "name": "Stacked Deck",
  "manifest_version": 2
}