Examine source code of Twice

{
  "name": "Twice",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "DZYkHNaUQAElbg0.jpg"
    },
    "colors": {
      "frame": "rgba(247, 139, 167, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(247, 168, 215, 1)",
      "bookmark_text": "rgba(151, 49, 176, 1)",
      "toolbar_field": "rgba(245, 35, 101, 1)"
    }
  }
}