Examine source code of Miku Append D ver.2

{
  "theme": {
    "images": {
      "theme_frame": "header3.jpg"
    },
    "colors": {
      "frame": "#d1c5c5",
      "tab_background_text": "#ac00bf"
    }
  },
  "version": "2.0",
  "name": "Miku Append D ver.2",
  "manifest_version": 2,
  "description": "=w="
}