Examine source code of Cute Mermaids

{
  "name": "Cute Mermaids",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Cute Mermaids.png"
    },
    "colors": {
      "frame": "rgba(251, 199, 221, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(252, 199, 220, 0)",
      "toolbar_field": "rgba(252, 199, 220, 0)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{71e35222-b568-43b7-ae59-e3ddbf82a4f6}"
    }
  }
}