Examine source code of Utena

{
  "name": "Utena",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "UTENA.jpg"
    },
    "colors": {
      "frame": "rgba(128, 128, 128, 0.05)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(168, 165, 165, 0.26)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(252, 252, 252, 0.41)",
      "toolbar_field_text": "rgba(110, 110, 110, 1)"
    }
  }
}