Examine source code of duney

{
  "name": "duney-4k-",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "duney-4k-.jpg"
    },
    "colors": {
      "frame": "rgba(50, 0, 130, 1)",
      "tab_background_text": "rgba(255, 251, 0, 1)",
      "toolbar": "rgba(79, 0, 0, 1)",
      "bookmark_text": "rgba(13, 255, 0, 1)",
      "toolbar_field": "rgba(46, 9, 9, 1)",
      "toolbar_field_text": "rgba(0, 255, 68, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ed3e480e-80a2-4c21-bfb8-666489075d1f}"
    }
  }
}