diff --git a/SceneGeom.cpp b/SceneGeom.cpp
index 2ca54ba..0514346 100644
--- a/SceneGeom.cpp
+++ b/SceneGeom.cpp
@@ -356,7 +356,7 @@ Scene::DrawGeoObj( const IGdbIterator& iIter, int nPass, const MdStMkCol& siObj)
             // se richiesto diverso
             if (( m_nShowZmap & ZSM_COLORS) != 0) {
                HSV hsv = GetHSVFromColor( siObj.colObj) ;
-               hsv.dHue += ANG_RIGHT / 2 ;
+               hsv.dHue += ANG_RIGHT / 3 ;
                cCol2 = GetColorFromHSV( hsv) ;
                mMat2.Set( cCol2) ;
             }