Examine source code of ayu dark cleaner

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "ayu dark gbi2",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgba(15, 20, 25, 0.42)",
      "toolbar_text": "rgb(255, 119, 43)",
      "frame": "rgb(35, 42, 47)",
      "tab_background_text": "rgb(191, 186, 176)",
      "toolbar_field": "rgb(7, 13, 20)",
      "toolbar_field_text": "rgb(194, 217, 76)",
      "tab_line": "rgb(255, 119, 43)",
      "popup": "rgb(35, 42, 47)",
      "popup_text": "rgb(194, 217, 76)",
      "tab_loading": "rgb(255, 119, 43)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8c07f5ce-ce37-4525-b615-23a072d2b280}"
    }
  }
}