Examine source code of Palm Trees at Sunset

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#104557",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Palm Trees at Sunset",
  "manifest_version": 2,
  "description": "Palm trees against a colorful sunset sky."
}