Examine source code of Dark theme complet

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark theme complet",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-005-f5f3cf677b1f132c75ddc7bd319dd1fc.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(0, 0, 0)",
      "toolbar_text": "rgb(241, 176, 22)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(251, 153, 112)",
      "toolbar_field": "rgb(0, 0, 0)",
      "toolbar_field_text": "rgb(233, 237, 241)",
      "tab_line": "rgb(255, 4, 214)",
      "popup": "rgb(0, 0, 0)",
      "popup_text": "rgb(255, 213, 0)",
      "button_background_active": "rgb(117, 95, 1)",
      "button_background_hover": "rgb(72, 55, 14)",
      "icons_attention": "rgb(4, 255, 4)",
      "icons": "rgb(1, 125, 255)",
      "popup_border": "rgb(1, 125, 255)",
      "sidebar": "rgb(249, 243, 241)",
      "tab_selected": "rgb(249, 176, 5)",
      "tab_text": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgb(242, 12, 230)",
      "toolbar_field_focus": "rgb(50, 6, 154)",
      "toolbar_top_separator": "rgb(1, 125, 255)",
      "toolbar_vertical_separator": "rgb(1, 125, 255)",
      "tab_loading": "rgb(255, 4, 214)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{63053e54-553f-4ba1-9ad7-414fa1370e20}"
    }
  }
}