diff --git a/dashboards/dashboard_walberla.py b/dashboards/dashboard_walberla.py
index b40c005c8c815e39871c11ae0ed5278999cdfde2..2b58fbff33f56d505e65b8a616d07c549f2d2664 100644
--- a/dashboards/dashboard_walberla.py
+++ b/dashboards/dashboard_walberla.py
@@ -304,6 +304,7 @@ def dashboard_fslbmgravitywave():
             gradientMode="Opacity",
             tooltipMode="single",
             overrides=overrides,
+            colorMode="fixed",
         ))
 
     panels.append(