Examine source code of Fantasy lunar landscape

{
  "theme": {
    "images": {
      "theme_frame": "Exoplanethead.jpg"
    },
    "colors": {
      "frame": "#ede8e8",
      "tab_background_text": "#8aede6"
    }
  },
  "version": "2.0",
  "name": "Fantasy lunar landscape",
  "manifest_version": 2,
  "description": "Fantasy landscape with pale blue text.\nEnjoy."
}