Examine source code of Waluigi Big Ben

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#c07ecc",
      "tab_background_text": "#d5b2db"
    }
  },
  "version": "2.0",
  "name": "Waluigi Big Ben",
  "manifest_version": 2,
  "description": "WALUIGI MADE THIS \"THEME\" TO BRING EXPOSURE FOR HIS NEW BOOK TO \"MOZILLA.\"\n\nOriginal art by WAAtthew Taranto (WALUIGI)\nEdited (in MS Paint) by me (ALSO WALUIGI)"
}