Examine source code of Hughes Meadow

{
  "name": "Hughes Meadow",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "15432543.png"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(16, 120, 199, 0.34)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(27, 123, 219, 0.36)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(199, 24, 193, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{e5ce1465-93e4-4553-a1ef-3f460e7f1b07}"
    }
  }
}