Examine source code of Ragnarok 2

{
  "theme": {
    "images": {
      "theme_frame": "rag1.jpg"
    },
    "colors": {
      "frame": "#546270",
      "tab_background_text": "#bcc9d6"
    }
  },
  "version": "2.0",
  "name": "Ragnarok 2",
  "manifest_version": 2,
  "description": "Legend of the Second"
}