Examine source code of Mystery Planet

{
  "theme": {
    "images": {
      "theme_frame": "Persona_gro1.2Kopie.jpg"
    },
    "colors": {
      "frame": "#dedede",
      "tab_background_text": "#ffffff"
    }
  },
  "version": "2.0",
  "name": "Mystery Planet",
  "manifest_version": 2,
  "description": "My first persona with a planet and frames around the edit line.\nHope you'll like it..."
}