Examine source code of Morning I

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    "images": {
      "theme_frame": "encabezado.jpg"
    },
    "colors": {
      "frame": "#c9d1a7",
      "tab_background_text": "#2a2b0a"
    }
  },
  "version": "2.0",
  "name": "Morning I",
  "manifest_version": 2
}