Examine source code of Autumn Dock

{
  "theme": {
    "images": {
      "theme_frame": "Autumn-Dock-Rainbow-Header.jpg"
    },
    "colors": {
      "frame": "#062101",
      "tab_background_text": "#fcfcfc"
    }
  },
  "version": "2.0",
  "name": "Autumn Dock",
  "manifest_version": 2,
  "description": "( fall foliage trees leafs colorful color forest bridge fishing lake river stream pond water woods pretty beautiful peaceful light sunlight sun red green orange yellow black white brown branches zen )"
}