diff --git a/data/themes/default/fader_knob.png b/data/themes/default/fader_knob.png
index 5a70134c1..d6321023e 100644
Binary files a/data/themes/default/fader_knob.png and b/data/themes/default/fader_knob.png differ
diff --git a/src/gui/widgets/fade_button.cpp b/src/gui/widgets/fade_button.cpp
index 2dc8f6cd7..0ae0c1f89 100644
--- a/src/gui/widgets/fade_button.cpp
+++ b/src/gui/widgets/fade_button.cpp
@@ -99,10 +99,10 @@ void fadeButton::paintEvent( QPaintEvent * _pe )
 
 	int w = rect().right();
 	int h = rect().bottom();
-	p.setPen( QColor( 37, 39, 46 ) );
+	p.setPen( m_normalColor.darker(130) );
 	p.drawLine( w, 1, w, h );
 	p.drawLine( 1, h, w, h );
-	p.setPen( QColor( 145, 147, 154 ) );
+	p.setPen( m_normalColor.lighter(130) );
 	p.drawLine( 0, 0, 0, h-1 );
 	p.drawLine( 0, 0, w, 0 );
 }
diff --git a/src/tracks/InstrumentTrack.cpp b/src/tracks/InstrumentTrack.cpp
index 37d8db962..441333a2d 100644
--- a/src/tracks/InstrumentTrack.cpp
+++ b/src/tracks/InstrumentTrack.cpp
@@ -1007,8 +1007,10 @@ InstrumentTrackView::InstrumentTrackView( InstrumentTrack * _it, TrackContainerV
 	m_midiInputAction->setText( tr( "Input" ) );
 	m_midiOutputAction->setText( tr( "Output" ) );
 
-	m_activityIndicator = new fadeButton( QColor( 56, 60, 72 ),
-						QColor( 64, 255, 16 ),
+	m_activityIndicator = new fadeButton( QApplication::palette().color( QPalette::Active,
+							QPalette::Background),
+						QApplication::palette().color( QPalette::Active,
+							QPalette::BrightText ),
 						getTrackSettingsWidget() );
 	m_activityIndicator->setGeometry(
 					 widgetWidth-2*24-11, 2, 8, 28 );