Examine source code of Vanished

{
  "theme": {
    "images": {
      "theme_frame": "persona-shoshitsu2.jpg"
    },
    "colors": {
      "frame": "#ffff9e",
      "tab_background_text": "#475200"
    }
  },
  "version": "2.0",
  "name": "Vanished",
  "manifest_version": 2,
  "description": "Haruhi, Yuki, and Kyon from Suzumiya Haruhi series. Illustrated by Itou Noizi."
}