diff --git a/AmpScan/ampVis.py b/AmpScan/ampVis.py
index 457f393f5f44339a3404b9e7180b5c0901e1815a..5705cc8f5642f174a6fb7cc840bc8d6b9b66a2b9 100644
--- a/AmpScan/ampVis.py
+++ b/AmpScan/ampVis.py
@@ -576,6 +576,7 @@ class ampActor(vtk.vtkActor):
         for i in range(bands):
             rgb = list(self.ctf.GetColor(float(i) / bands)) + [1]
             self.lut.SetTableValue(i, rgb)
+        self.Mapper.SetLookupTable(self.lut)
     
     def setShading(self, shading=True):
         r"""