Examine source code of Onedark Deep

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Onedark Deep",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(26, 33, 46)",
      "toolbar_text": "rgb(65, 167, 252)",
      "frame": "rgb(20, 27, 36)",
      "tab_background_text": "rgb(147, 164, 195)",
      "toolbar_field": "rgb(26, 33, 46)",
      "toolbar_field_text": "rgb(147, 164, 195)",
      "tab_line": "rgb(65, 167, 252)",
      "popup": "rgb(26, 33, 46)",
      "popup_text": "rgb(147, 164, 195)",
      "tab_loading": "rgb(65, 167, 252)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{46f83110-89c3-42d1-b683-e895185299f4}"
    }
  }
}