diff --git a/src/modelskill/plotting/_spatial_overview.py b/src/modelskill/plotting/_spatial_overview.py
index 10d00c5aa..156af04c1 100644
--- a/src/modelskill/plotting/_spatial_overview.py
+++ b/src/modelskill/plotting/_spatial_overview.py
@@ -86,7 +86,7 @@ def spatial_overview(
             ax.scatter(x=o.x, y=o.y, marker="x")
         elif isinstance(o, TrackObservation):
             if o.n_points < 10000:
-                ax.scatter(x=o.x, y=o.y, c=o.values, marker=".", cmap="Reds")
+                ax.scatter(x=o.x, y=o.y, marker=".")
             else:
                 print(f"{o.name}: Too many points to plot")
                 # TODO: group by lonlat bin or sample randomly