Examine source code of Super Famicom Supreme

{
  "name": "Super Famicom Supreme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Super Famicom Supreme.png"
    },
    "colors": {
      "frame": "rgba(8, 70, 186, 1)",
      "tab_background_text": "rgba(68, 172, 113, 1)",
      "toolbar": "rgba(217, 64, 64, 1)",
      "bookmark_text": "rgba(254, 218, 90, 1)",
      "toolbar_field": "rgba(254, 218, 90, 1)",
      "toolbar_field_text": "rgba(8, 70, 186, 1)",
      "tab_line": "rgba(68, 172, 113, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{22f88d64-5cc8-4a7b-bd53-f78fd5f7b588}"
    }
  }
}