Examine source code of Vert de gris

{
  "name": "Vert de gris",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Capture d'écran 2024-09-15 213148.png"
    },
    "colors": {
      "frame": "rgba(67, 92, 75, 1)",
      "tab_background_text": "rgba(255, 255, 255, 0.95)",
      "toolbar": "rgba(95, 125, 102, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b75e3c7-0863-47fd-86fb-7a18a2cc72ff}"
    }
  }
}