Examine source code of eduardo-gruvbox-hacker

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "eduardo-gruvbox-hacker",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(29, 32, 33)",
      "toolbar_text": "rgb(235, 219, 178)",
      "frame": "rgb(17, 17, 17)",
      "tab_background_text": "rgb(146, 131, 116)",
      "toolbar_field": "rgb(40, 40, 40)",
      "toolbar_field_text": "rgb(235, 219, 178)",
      "tab_line": "rgb(142, 192, 124)",
      "popup": "rgb(29, 32, 33)",
      "popup_text": "rgb(235, 219, 178)",
      "tab_loading": "rgb(142, 192, 124)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ee1203a9-8f0f-4697-8bd6-914d4f604e61}"
    }
  }
}