Examine source code of Summer Forest by MaDonna

{
  "name": "Summer Forest by MaDonna",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "SummerForestH1.jpg"
    },
    "colors": {
      "frame": "rgba(79, 121, 158, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(79, 118, 158, 0)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(79, 118, 158, 0.08)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{9ba4e2f9-c1c2-49c0-8c5b-ee41b17b6945}"
    }
  }
}