Examine source code of Light blue 2022 theme

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Light blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right bottom"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(22, 157, 233)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(54, 80, 96)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(68, 93, 106)",
      "toolbar_field_text": "rgb(123, 127, 204)",
      "tab_line": "rgb(255, 248, 250)",
      "popup": "rgb(255, 255, 255)",
      "popup_text": "rgb(38, 45, 184)",
      "tab_loading": "rgb(255, 248, 250)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{3fdee2fe-7d74-4b65-9ba5-24e69bf1aa6b}"
    }
  }
}