Examine source code of Light blend.

{
  "theme": {
    "images": {
      "theme_frame": "d924-art--100p-li-d.jpg"
    },
    "colors": {
      "frame": "#edeaea",
      "tab_background_text": "#f2f2ed"
    }
  },
  "version": "2.0",
  "name": "Light blend.",
  "manifest_version": 2,
  "description": "ひかり響きあう。"
}