Examine source code of LightBlueThree

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "LightBlueThree",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-031-9570e8d1f7a5f835c92e764693337f43.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(99, 188, 244)",
      "toolbar_text": "rgb(0, 0, 0)",
      "frame": "rgb(0, 161, 255)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(210, 238, 255)",
      "toolbar_field_text": "rgb(0, 50, 196)",
      "tab_line": "rgb(41, 39, 41)",
      "popup": "rgb(72, 201, 255)",
      "popup_text": "rgb(43, 11, 172)",
      "tab_loading": "rgb(41, 39, 41)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{7c78b465-20b5-4262-8ef5-fc1098849c8a}"
    }
  }
}