Examine source code of Utatane Piko

{
  "theme": {
    "images": {
      "theme_frame": "piko_header1.PNG"
    },
    "colors": {
      "frame": "#27d9ad",
      "tab_background_text": "#13bf9f"
    }
  },
  "version": "2.0",
  "name": "Utatane Piko",
  "manifest_version": 2,
  "description": "Utatane Piko-Vocaloid"
}