Examine source code of Bridge by MaDonna

{
  "name": "Bridge by MaDonna",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(59, 32, 13, 1)",
      "tab_background_text": "rgba(252, 246, 226, 1)",
      "toolbar": "rgba(59, 32, 13, 0)",
      "bookmark_text": "rgba(252, 246, 234, 1)",
      "toolbar_field": "rgba(59, 32, 13, 0.05)",
      "toolbar_field_text": "rgba(255, 246, 227, 1)",
      "tab_line": "rgba(255, 246, 227, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4070e32c-7ca1-4c55-b644-91e67b2d6147}"
    }
  }
}