Examine source code of Whirls by MaDonna

{
  "name": "Whirls by MaDonna",
  "manifest_version": 2,
  "version": "6.0",
  "theme": {
    "images": {
      "theme_frame": "Swirls2H.jpg"
    },
    "colors": {
      "frame": "rgba(125, 25, 50, 1)",
      "tab_background_text": "rgba(39, 231, 246, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(39, 231, 246, 1)",
      "toolbar_field": "rgba(0, 0, 0, 0.07)",
      "toolbar_field_text": "rgba(243, 181, 255, 1)",
      "tab_line": "rgba(163, 246, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{4689e600-e47e-4403-a0f5-80d3c97d419b}"
    }
  }
}