Examine source code of The Oval

{
  "name": "The Oval",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "TheOval.jpg"
    },
    "colors": {
      "frame": "rgba(208, 211, 219, 1)",
      "tab_background_text": "rgba(18, 15, 15, 1)",
      "toolbar": "rgba(217, 7, 7, 1)",
      "bookmark_text": "rgba(240, 255, 243, 1)",
      "toolbar_field": "rgba(208, 211, 219, 1)",
      "toolbar_field_text": "rgba(217, 7, 7, 1)"
    }
  }
}