Examine source code of Caution tape

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Caution tape",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(39, 39, 35)",
      "toolbar_text": "rgb(248, 242, 112)",
      "frame": "rgb(68, 68, 66)",
      "tab_background_text": "rgb(0, 0, 0)",
      "toolbar_field": "rgb(248, 242, 112)",
      "toolbar_field_text": "rgb(39, 39, 35)",
      "tab_line": "rgb(248, 242, 112)",
      "popup": "rgb(84, 84, 82)",
      "popup_text": "rgb(39, 39, 35)",
      "button_background_hover": "rgb(248, 242, 112)",
      "icons_attention": "rgb(248, 242, 112)",
      "icons": "rgb(248, 242, 112)",
      "ntp_background": "rgb(39, 39, 35)",
      "popup_border": "rgb(0, 0, 0)",
      "popup_highlight_text": "rgb(248, 242, 112)",
      "popup_highlight": "rgb(248, 242, 112)",
      "sidebar_border": "rgb(248, 242, 112)",
      "sidebar_highlight_text": "rgb(248, 242, 112)",
      "sidebar_highlight": "rgb(68, 68, 66)",
      "sidebar_text": "rgb(39, 39, 35)",
      "sidebar": "rgb(68, 68, 66)",
      "tab_loading": "rgb(248, 242, 112)",
      "tab_selected": "rgb(39, 39, 35)",
      "tab_text": "rgb(248, 242, 112)",
      "toolbar_bottom_separator": "rgb(248, 242, 112)",
      "toolbar_field_border": "rgb(84, 84, 82)",
      "toolbar_field_highlight_text": "rgb(248, 242, 112)",
      "toolbar_field_separator": "rgb(248, 242, 112)",
      "toolbar_top_separator": "rgb(248, 242, 112)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{d8c1e124-5a55-4b55-bdbe-a225f4bccb2a}"
    }
  }
}