Examine source code of Happy Fourth

{
  "name": "Happy Fourth",
  "manifest_version": 2,
  "version": "4.0",
  "theme": {
    "images": {
      "theme_frame": "Fourth Last.jpg"
    },
    "colors": {
      "frame": "rgba(227, 229, 232, 0)",
      "tab_background_text": "rgba(28, 119, 255, 1)",
      "toolbar": "rgba(0, 0, 0, 0.07)",
      "bookmark_text": "rgba(255, 255, 255, 0.97)",
      "toolbar_field": "rgba(247, 5, 5, 0.23)",
      "toolbar_field_text": "rgba(255, 0, 9, 1)"
    }
  }
}