Examine source code of Unicorn Snow

{
  "name": "Unicorn Snow",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Unicorn Snow.png"
    },
    "colors": {
      "frame": "rgba(23, 52, 84, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(24, 52, 87, 0)",
      "toolbar_field": "rgba(255, 255, 255, 0)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c9a6abb-9212-40a4-be73-fb19363d928f}"
    }
  }
}