Fix a bug where copied instrument tracks appear grey

src/tracks/SampleTrack.cpp

@@ -202,6 +202,8 @@ SampleTCOView::SampleTCOView( SampleTCO * _tco, trackView * _tv ) :
 	// track future changes of SampleTCO
 	connect( m_tco, SIGNAL( sampleChanged() ),
 			this, SLOT( updateSample() ) );
+
+	setStyle( QApplication::style() );
 }
 
 

src/tracks/pattern.cpp

@@ -594,6 +594,7 @@ patternView::patternView( pattern * _pattern, trackView * _parent ) :
 	toolTip::add( this,
 		tr( "double-click to open this pattern in piano-roll\n"
 			"use mouse wheel to set volume of a step" ) );
+	setStyle( QApplication::style() );
 }