Examine source code of Wild Dark Clouds

{
  "name": "Wild Dark Clouds",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.02)",
      "toolbar_field": "rgba(19, 30, 74, 0.49)",
      "toolbar_field_text": "rgba(255, 255, 255, 1)",
      "frame": "#000000",
      "tab_background_text": "#fffcfc",
      "bookmark_text": "rgba(255, 255, 255, 0.98)"
    }
  }
}