Examine source code of Blue theme 2023

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Blue theme",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(4, 40, 70)",
      "toolbar_text": "rgb(217, 231, 234)",
      "frame": "rgb(4, 40, 70)",
      "tab_background_text": "rgb(217, 231, 234)",
      "toolbar_field": "rgb(40, 70, 105)",
      "toolbar_field_text": "rgb(217, 231, 234)",
      "tab_line": "rgb(24, 236, 121)",
      "popup": "rgb(4, 40, 70)",
      "popup_text": "rgb(217, 231, 234)",
      "tab_loading": "rgb(24, 236, 121)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{8113b770-1e24-4a35-a409-8974ad8fda55}"
    }
  }
}