Examine source code of Los Angeles Rams Return

{
  "name": "Los Angeles Rams Return",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "LA Rams at Coliseum.jpg"
    },
    "colors": {
      "frame": "#163154",
      "tab_background_text": "rgba(239, 245, 174, 1)",
      "toolbar": "rgba(32, 17, 92, 1)",
      "bookmark_text": "rgba(241, 245, 171, 1)",
      "toolbar_field": "rgba(21, 24, 97, 1)",
      "toolbar_field_text": "rgba(245, 245, 171, 1)"
    }
  }
}