Examine source code of Fall Morning..

{
  "theme": {
    "images": {
      "theme_frame": "FallsMorningH.jpg"
    },
    "colors": {
      "frame": "#ffffff",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Fall Morning..",
  "manifest_version": 2,
  "description": "trees, sky, birds, crows, leaves, color, clouds"
}