Examine source code of Captain Marvel Shazam

{
  "name": "dc heroes banner",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "shazam banner5.png"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(250, 5, 5, 0.71)",
      "bookmark_text": "rgba(250, 202, 130, 1)",
      "toolbar_field_text": "rgba(3, 3, 3, 1)"
    }
  }
}