Examine source code of Cool anime twins

{
  "theme": {
    "images": {
      "theme_frame": "animetwinsheader.png"
    },
    "colors": {
      "frame": "#4d4b05",
      "tab_background_text": "#4d4b05"
    }
  },
  "version": "2.0",
  "name": "Cool anime twins",
  "manifest_version": 2,
  "description": "no description"
}