Examine source code of Coconut

{
  "name": "Coconut",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "DARKBROWN.png"
    },
    "colors": {
      "toolbar": "rgba(26, 7, 0, 1)",
      "toolbar_field": "rgba(41, 28, 23, 1)",
      "toolbar_field_text": "rgba(232, 201, 188, 1)",
      "frame": "rgba(20, 12, 9, 1)",
      "tab_background_text": "rgba(173, 84, 48, 1)",
      "bookmark_text": "rgba(222, 130, 93, 1)"
    }
  }
}