Examine source code of RYR

{
  "name": "RYR",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "ryanair.png"
    },
    "colors": {
      "frame": "rgba(8, 47, 133, 1)",
      "tab_background_text": "rgba(255, 255, 255, 1)",
      "toolbar": "rgba(0, 29, 194, 0)",
      "bookmark_text": "rgba(255, 241, 186, 1)",
      "toolbar_field": "rgba(255, 255, 255, 1)",
      "toolbar_field_text": "rgba(8, 33, 133, 0.7)"
    }
  }
}