Examine source code of Red and Blue Digital

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Red and Blue Digital",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(201, 9, 9, 0.62)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(225, 96, 222)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(63, 102, 179, 0.2)",
      "toolbar_field_text": "rgb(255, 249, 251)",
      "tab_line": "rgb(151, 65, 205)",
      "popup": "rgb(239, 28, 193)",
      "popup_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(151, 65, 205)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{aaee109c-3b9a-4b1e-85f4-98aee424abee}"
    }
  }
}