Examine source code of Headlands

{
  "theme": {
    "images": {
      "theme_frame": "Personasmaller.jpg"
    },
    "colors": {
      "frame": "#42cf1b",
      "tab_background_text": "#13f2a8"
    }
  },
  "version": "2.0",
  "name": "Headlands",
  "manifest_version": 2,
  "description": "Images from another life..."
}