Examine source code of HARUKAZE

{
  "name": "HARUKAZE",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "3000x200_Firefox_2022年4月分(完成形・350dpi).png"
    },
    "colors": {
      "frame": "rgba(143, 116, 249, 1)",
      "tab_background_text": "rgba(229, 180, 249, 1)",
      "toolbar": "rgba(255, 255, 255, 0.2)",
      "bookmark_text": "rgba(229, 180, 249, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.2)",
      "toolbar_field_text": "rgba(229, 180, 249, 1)",
      "tab_line": "rgba(249, 116, 179, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{54b5ffa4-1f21-4c12-825a-2dbecea7c2ba}"
    }
  }
}