Examine source code of Happy Cupcake

{
  "theme": {
    "images": {
      "theme_frame": "Cupcake_Persona.png"
    },
    "colors": {
      "frame": "#b8b8b8",
      "tab_background_text": "#573207"
    }
  },
  "version": "2.0",
  "name": "Happy Cupcake",
  "manifest_version": 2,
  "description": "Just a happy cupcake!\nI love scribble/pixel/vector drawings, so I decided to make some of my personas scribble based! \nEnjoy! XD"
}