Examine source code of Black 07 2023

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "black ++",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(1, 133, 116, 0)",
      "toolbar_text": "rgb(225, 225, 225)",
      "frame": "rgb(108, 108, 108)",
      "tab_background_text": "rgb(225, 225, 225)",
      "toolbar_field": "rgba(108, 108, 108, 0.66)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(108, 108, 108)",
      "popup": "rgb(37, 37, 37)",
      "popup_text": "rgb(225, 225, 225)",
      "button_background_hover": "rgba(108, 108, 108, 0.5)",
      "icons": "rgb(144, 153, 154)",
      "ntp_background": "rgb(37, 39, 43)",
      "ntp_text": "rgb(229, 229, 229)",
      "popup_border": "rgba(108, 108, 108, 0.5)",
      "popup_highlight": "rgb(0, 183, 195)",
      "sidebar_border": "rgb(0, 183, 195)",
      "sidebar_highlight_text": "rgb(3, 131, 135)",
      "sidebar_highlight": "rgba(108, 108, 108, 0.5)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(44, 44, 44)",
      "tab_selected": "rgb(33, 33, 33)",
      "tab_text": "rgb(0, 183, 195)",
      "toolbar_bottom_separator": "rgb(6, 6, 6)",
      "toolbar_field_border_focus": "rgb(4, 164, 169)",
      "toolbar_field_border": "rgb(0, 0, 0)",
      "toolbar_field_focus": "rgb(108, 108, 108)",
      "toolbar_field_highlight_text": "rgba(0, 0, 0, 0.51)",
      "toolbar_field_highlight": "rgb(3, 131, 135)",
      "toolbar_field_separator": "rgb(33, 33, 33)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0.51)",
      "toolbar_vertical_separator": "rgb(33, 33, 33)",
      "tab_loading": "rgb(108, 108, 108)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c1fdba19-3ac9-441c-811d-e0f55c2105a0}"
    }
  }
}