Examine source code of Black MacOs Aesthetic

{
  "name": "Diseño sin título (6)",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Diseño sin título(3).png"
    },
    "colors": {
      "frame": "rgba(71, 71, 71, 1)",
      "tab_background_text": "rgba(102, 102, 102, 1)",
      "toolbar": "rgba(31, 31, 31, 1)",
      "bookmark_text": "rgba(186, 186, 186, 1)",
      "toolbar_field": "rgba(43, 43, 43, 1)",
      "toolbar_field_text": "rgba(186, 186, 186, 1)",
      "tab_line": "rgba(255, 255, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{2d5d0de3-b136-4cbe-9509-125429a25b44}"
    }
  }
}