Examine source code of autumn trees---

{
  "theme": {
    "images": {
      "theme_frame": "autumntrees.png"
    },
    "colors": {
      "frame": "#5e413a",
      "tab_background_text": "#fcdc92"
    }
  },
  "version": "2.0",
  "name": "autumn trees---",
  "manifest_version": 2,
  "description": "trees, arbres, autumn, automne, brume, mist, fog, orange, fall, fall colors"
}