Examine source code of Semi-Oxidised Copper

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Semi-Oxidised Copper",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(12, 115, 103)",
      "toolbar_text": "rgb(255, 142, 0)",
      "frame": "rgb(3, 92, 92)",
      "tab_background_text": "rgb(255, 142, 0)",
      "toolbar_field": "rgb(104, 71, 19)",
      "toolbar_field_text": "rgb(255, 125, 20)",
      "tab_line": "rgb(255, 129, 28)",
      "popup": "rgb(104, 71, 19)",
      "popup_text": "rgb(255, 125, 20)",
      "button_background_active": "rgba(255, 115, 0, 0.59)",
      "button_background_hover": "rgba(255, 115, 0, 0.41)",
      "icons": "rgb(255, 115, 0)",
      "ntp_background": "rgb(144, 209, 204)",
      "popup_border": "rgb(255, 125, 20)",
      "tab_loading": "rgb(255, 129, 28)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{0b795114-3ad6-4477-9825-297785787722}"
    }
  }
}