Examine source code of Sunrise Purple Fields

{
  "name": "Sunrise Purple Fields",
  "manifest_version": 2,
  "version": "5.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "rgba(33, 42, 82, 1)",
      "tab_background_text": "rgba(255, 255, 136, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(255, 255, 136, 1)",
      "toolbar_field": "rgba(33, 42, 82, 0.07)",
      "toolbar_field_text": "rgba(255, 255, 136, 1)",
      "tab_line": "rgba(255, 255, 136, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d9cb344f-fc4e-41e0-b04e-c648cda134b8}"
    }
  }
}