Examine source code of Miraculous Ladybug 2019

{
  "name": "Miraculous Ladybug 2019",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "Miraculous Ladybug Header for Firefox.png"
    },
    "colors": {
      "frame": "rgba(150, 8, 8, 1)",
      "tab_background_text": "rgba(99, 8, 8, 1)",
      "bookmark_text": "rgba(255, 255, 255, 1)",
      "toolbar_field": "rgba(240, 200, 200, 0.55)"
    }
  }
}