Examine source code of Horizon Zero Dawn v2

{
  "name": "Horizon Zero Dawn v2",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "2.png"
    },
    "colors": {
      "frame": "rgba(245, 199, 252, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(229, 255, 252, 0.4)",
      "bookmark_text": "rgba(50, 10, 79, 1)",
      "toolbar_field": "rgba(235, 252, 255, 0.86)",
      "toolbar_field_text": "rgba(64, 80, 82, 1)"
    }
  }
}