Examine source code of Princess Belle16

{
  "theme": {
    "images": {
      "theme_frame": "Button-83.png"
    },
    "colors": {
      "frame": "#f78bd5",
      "tab_background_text": "#530554"
    }
  },
  "version": "2.0",
  "name": "Princess Belle16",
  "manifest_version": 2
}