Examine source code of bts2022

{
  "name": "bts2022",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "temafire.png"
    },
    "colors": {
      "frame": "rgba(232, 233, 235, 0)",
      "tab_background_text": "rgba(245, 14, 237, 1)",
      "toolbar": "rgba(0, 0, 0, 0)",
      "bookmark_text": "rgba(139, 69, 150, 1)",
      "toolbar_field": "rgba(3, 3, 3, 0)",
      "toolbar_field_text": "rgba(255, 71, 234, 1)",
      "tab_line": "rgba(131, 26, 217, 0)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{1f14811e-9312-466f-8d89-6914ba5595e9}"
    }
  }
}