Examine source code of Retex

{
  "name": "Retex",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "cyber-1.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(245, 245, 245, 1)",
      "toolbar": "rgba(44, 14, 59, 0.68)",
      "bookmark_text": "rgba(245, 245, 245, 1)",
      "toolbar_field": "rgba(186, 186, 186, 0.99)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)",
      "tab_line": "rgba(255, 230, 0, 0.5)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{42652447-ce0f-48ff-bf71-ee315fd70a06}"
    }
  }
}