Examine source code of Adapta-Dark-official

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Adapta-Dark",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(41, 53, 59)",
      "toolbar_text": "rgb(207, 216, 220)",
      "frame": "rgb(34, 45, 50)",
      "tab_background_text": "rgb(127, 137, 142)",
      "toolbar_field": "rgb(47, 61, 68)",
      "toolbar_field_text": "rgb(207, 216, 220)",
      "tab_line": "rgb(0, 188, 212)",
      "popup": "rgb(41, 53, 59)",
      "popup_text": "rgb(207, 216, 220)",
      "tab_loading": "rgb(0, 188, 212)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c42c799f-fbd1-43f2-9724-09867f3f999c}"
    }
  }
}