Examine source code of Curtain creatures design

{
  "theme": {
    "images": {
      "theme_frame": "creatures_2.jpg"
    },
    "colors": {
      "frame": "#e3dada",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Curtain creatures design",
  "manifest_version": 2,
  "description": "Curtain creatures for your browser, best view at 1920 x 1080 pixels..."
}