Examine source code of YouTube Theme

{
  "name": "YouTube Theme",
  "manifest_version": 2,
  "version": "2.0",
  "theme": {
    "images": {
      "theme_frame": "YouTube2.JPG"
    },
    "colors": {
      "frame": "rgba(209, 88, 118, 0.55)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(255, 255, 255, 0)",
      "bookmark_text": "rgba(0, 0, 0, 1)",
      "toolbar_field": "rgba(156, 125, 125, 0.65)",
      "toolbar_field_text": "rgba(54, 54, 54, 1)",
      "tab_line": "rgba(0, 0, 0, 1)"
    }
  }
}