Examine source code of Simple Dark Green

{
  "name": "Simple Dark",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "brazzer-logo-png-7.png"
    },
    "colors": {
      "frame": "rgba(13, 13, 13, 1)",
      "tab_background_text": "rgba(83, 166, 87, 1)",
      "toolbar": "rgba(0, 0, 0, 1)",
      "bookmark_text": "rgba(41, 191, 31, 1)",
      "toolbar_field": "rgba(232, 232, 232, 1)",
      "toolbar_field_text": "rgba(14, 9, 115, 1)"
    }
  }
}