Examine source code of Future Green

{
  "manifest_version": 2,
  "version": "2.0",
  "name": "Future Green",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(16, 126, 187, 0.73)",
      "toolbar_field": "rgba(19, 5, 40, 0.45)",
      "toolbar_field_text": "rgb(19, 190, 1)",
      "tab_line": "rgb(19, 190, 1)",
      "popup": "rgb(19, 5, 40)",
      "popup_text": "rgb(19, 190, 1)",
      "tab_loading": "rgb(19, 190, 1)",
      "bookmark_text": "rgb(19, 190, 1)",
      "frame": "rgb(19, 5, 40)",
      "tab_background_text": "rgb(19, 190, 1)"
    }
  }
}