Examine source code of truly

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "truly",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-011-d53e0d0d1538ed554a90e056a2f04eca.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(206, 233, 93, 0.73)",
      "toolbar_text": "rgba(152, 2, 6, 0.98)",
      "frame": "rgb(26, 63, 32)",
      "tab_background_text": "rgb(174, 207, 235)",
      "toolbar_field": "rgb(199, 214, 158)",
      "toolbar_field_text": "rgb(215, 74, 227)",
      "tab_line": "rgb(239, 51, 224)",
      "popup": "rgb(128, 125, 125)",
      "popup_text": "rgb(42, 49, 174)",
      "tab_loading": "rgb(239, 51, 224)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{b38eefbb-2f7a-4767-bd3f-94068b905ace}"
    }
  }
}