Examine source code of Mill Creek Sunset

{
  "theme": {
    "images": {
      "theme_frame": "GeneralElectricinSilhouette.jpg"
    },
    "colors": {
      "frame": "#383838",
      "tab_background_text": "#6b6b6b"
    }
  },
  "version": "2.0",
  "name": "Mill Creek Sunset",
  "manifest_version": 2,
  "description": "Sunset along the Mill Creek in Cincinnati behind General Electric in Evendale. Industrialized landscape."
}