Examine source code of Alpine Expanse

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Alpine Expanse",
  "theme": {
    "images": {
      "theme_frame": "1.png"
    },
    "colors": {
      "frame": "#9c9c9c",
      "tab_background_text": "#fcfcfc"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{f3d36c12-c2af-47c4-ae72-136dcd610c22}"
    }
  }
}