diff --git a/src/effects/Effect.cpp b/src/effects/Effect.cpp
index b53e1ac36..ef97d9f4c 100644
--- a/src/effects/Effect.cpp
+++ b/src/effects/Effect.cpp
@@ -1592,9 +1592,12 @@ bool Effect::ProcessTrack(int count,
 
       // Create temporary tracks
       genLeft = mFactory->NewWaveTrack(left->GetSampleFormat(), left->GetRate());
+      genLeft->SetWaveColorIndex( left->GetWaveColorIndex() );
 
-      if (right)
+      if (right) {
          genRight = mFactory->NewWaveTrack(right->GetSampleFormat(), right->GetRate());
+         genRight->SetWaveColorIndex( right->GetWaveColorIndex() );
+      }
    }
 
    // Call the effect until we run out of input or delayed samples
diff --git a/src/effects/nyquist/Nyquist.cpp b/src/effects/nyquist/Nyquist.cpp
index 093f8d8d0..a57430a0b 100644
--- a/src/effects/nyquist/Nyquist.cpp
+++ b/src/effects/nyquist/Nyquist.cpp
@@ -1505,6 +1505,8 @@ bool NyquistEffect::ProcessOne()
       }
 
       outputTrack[i] = mFactory->NewWaveTrack(format, rate);
+      if ( mCurTrack[i] )
+         outputTrack[i]->SetWaveColorIndex( mCurTrack[i]->GetWaveColorIndex() );
 
       // Clean the initial buffer states again for the get callbacks
       // -- is this really needed?