diff --git a/jupytercad_freecad/freecad/loader.py b/jupytercad_freecad/freecad/loader.py
index fdcc45b..ed9205f 100644
--- a/jupytercad_freecad/freecad/loader.py
+++ b/jupytercad_freecad/freecad/loader.py
@@ -147,8 +147,10 @@ def load(self, base64_content: str) -> None:
             if obj_name in self._options["guidata"]:
                 if "color" in self._options["guidata"][obj_name]:
                     gui_data_color = self._options["guidata"][obj_name]["color"]
-                    
-                    obj_data["parameters"]["Color"] = gui_data_color if gui_data_color else default_color
+
+                    obj_data["parameters"]["Color"] = (
+                        gui_data_color if gui_data_color else default_color
+                    )
                 if "visible" in self._options["guidata"][obj_name]:
                     obj_data["visible"] = self._options["guidata"][obj_name]["visible"]