Examine source code of Three witch

{
  "theme": {
    "images": {
      "theme_frame": "top.png"
    },
    "colors": {
      "frame": "#000066",
      "tab_background_text": "#9999ff"
    }
  },
  "version": "2.0",
  "name": "Three witch",
  "manifest_version": 2,
  "description": "touhou,patchouli knowledge,alice margatroid,kirisame marisa"
}