Examine source code of RUL Theme

{
  "name": "RUL Theme",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "FB_IMG_1572655217606.jpg"
    },
    "colors": {
      "frame": "rgba(229, 231, 232, 1)",
      "tab_background_text": "rgba(3, 1, 1, 1)",
      "toolbar": "rgba(36, 36, 27, 1)",
      "bookmark_text": "rgba(33, 64, 156, 1)",
      "toolbar_field": "rgba(0, 0, 0, 1)",
      "toolbar_field_text": "rgba(126, 191, 105, 1)"
    }
  }
}