Examine source code of light blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(212, 226, 235)",
      "toolbar_text": "rgb(62, 67, 55)",
      "frame": "rgb(151, 196, 227)",
      "tab_background_text": "rgb(24, 7, 1)",
      "toolbar_field": "rgba(255, 237, 237, 0.7)",
      "toolbar_field_text": "rgb(67, 78, 48)",
      "tab_line": "rgb(231, 231, 231)",
      "popup": "rgb(223, 234, 238)",
      "popup_text": "rgb(3, 27, 3)",
      "icons_attention": "rgb(201, 232, 158)",
      "tab_loading": "rgb(231, 231, 231)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{ad8521c6-88c4-4848-b368-2c57ed6bbe54}"
    }
  }
}