Examine source code of Tema Fortnite

{
  "name": "Tema Fortnite",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Fortnite theme.jpg"
    },
    "colors": {
      "frame": "rgba(71, 48, 92, 1)",
      "tab_background_text": "rgba(43, 65, 112, 1)",
      "toolbar": "rgba(49, 143, 158, 1)",
      "bookmark_text": "rgba(10, 25, 107, 1)",
      "toolbar_field": "rgba(51, 21, 112, 1)",
      "toolbar_field_text": "rgba(90, 152, 173, 1)"
    }
  }
}