Examine source code of 3bdoo

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "3bdoo",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-036-40a272fe657f748396e017c7a64ee2dc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(218, 67, 67)",
      "frame": "rgb(4, 4, 4)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgb(46, 45, 45)",
      "toolbar_field_text": "rgb(243, 243, 247)",
      "tab_line": "rgb(169, 12, 12)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(138, 142, 218)",
      "tab_loading": "rgb(169, 12, 12)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{55b211ed-d33e-4484-8567-6403b16b70e5}"
    }
  }
}