diff --git a/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformStyleProvider.java b/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformStyleProvider.java
index d61b191..f7698cc 100644
--- a/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformStyleProvider.java
+++ b/plugins/com.minres.scviewer.e4.application/src/com/minres/scviewer/e4/application/parts/WaveformStyleProvider.java
@@ -8,7 +8,6 @@ import org.eclipse.jface.resource.StringConverter;
 import org.eclipse.swt.graphics.Color;
 import org.eclipse.swt.graphics.Font;
 import org.eclipse.swt.graphics.RGB;
-import org.eclipse.swt.widgets.Composite;
 import org.eclipse.swt.widgets.Display;
 import org.eclipse.wb.swt.SWTResourceManager;
 import org.osgi.service.prefs.Preferences;
@@ -20,74 +19,46 @@ import com.minres.scviewer.e4.application.preferences.PreferenceConstants;
 
 public class WaveformStyleProvider implements IWaveformStyleProvider {
 
-	private Composite parent;
-	
 	private Font nameFont;
 	
 	private Color[] colors = new Color[WaveformColors.values().length];
 
 	// list of random colors
-	private static Color[][] randomColors;
+	private static Color[][] randomColors = new Color[][] {
+		{ SWTResourceManager.getColor( 170,  66,  37 ), SWTResourceManager.getColor( 190,  66,  37 ) },
+		{ SWTResourceManager.getColor(  96,  74, 110 ), SWTResourceManager.getColor(  96,  74, 130 ) },
+		{ SWTResourceManager.getColor( 133, 105, 128 ), SWTResourceManager.getColor( 153, 105, 128 ) },
+		{ SWTResourceManager.getColor(   0, 126, 135 ), SWTResourceManager.getColor(   0, 126, 155 ) },
+		{ SWTResourceManager.getColor( 243, 146,  75 ), SWTResourceManager.getColor( 255, 146,  75 ) },
+		{ SWTResourceManager.getColor( 206, 135, 163 ), SWTResourceManager.getColor( 226, 135, 163 ) },
+		{ SWTResourceManager.getColor( 124, 103,  74 ), SWTResourceManager.getColor( 144, 103,  74 ) },
+		{ SWTResourceManager.getColor( 194, 187, 169 ), SWTResourceManager.getColor( 214, 187, 169 ) },
+		{ SWTResourceManager.getColor( 104,  73,  71 ), SWTResourceManager.getColor( 124,  73,  71 ) },
+		{ SWTResourceManager.getColor(  75, 196, 213 ), SWTResourceManager.getColor(  75, 196, 233 ) },
+		{ SWTResourceManager.getColor( 206, 232, 229 ), SWTResourceManager.getColor( 206, 252, 229 ) },
+		{ SWTResourceManager.getColor( 169, 221, 199 ), SWTResourceManager.getColor( 169, 241, 199 ) },
+		{ SWTResourceManager.getColor( 100, 165, 197 ), SWTResourceManager.getColor( 100, 165, 217 ) },
+		{ SWTResourceManager.getColor( 150, 147, 178 ), SWTResourceManager.getColor( 150, 147, 198 ) },
+		{ SWTResourceManager.getColor( 200, 222, 182 ), SWTResourceManager.getColor( 200, 242, 182 ) },
+		{ SWTResourceManager.getColor( 147, 208, 197 ), SWTResourceManager.getColor( 147, 228, 197 ) }
+};
 
 	private int trackHeigth=25;
 	
-	public WaveformStyleProvider() {
-		setupDefaults();
-	}
-
-	private void setupDefaults() {
-		Display display = Display.getCurrent();
-		
-		nameFont = display.getSystemFont();
-		DefaultWaveformStyleProvider x = new DefaultWaveformStyleProvider();
-		for (WaveformColors color : WaveformColors.values())
-			colors[color.ordinal()] = x.getColor(color);
-		randomColors = new Color[][] {
-				{ SWTResourceManager.getColor( 170,  66,  37 ), SWTResourceManager.getColor( 190,  66,  37 ) },
-				{ SWTResourceManager.getColor(  96,  74, 110 ), SWTResourceManager.getColor(  96,  74, 130 ) },
-				{ SWTResourceManager.getColor( 133, 105, 128 ), SWTResourceManager.getColor( 153, 105, 128 ) },
-				{ SWTResourceManager.getColor(   0, 126, 135 ), SWTResourceManager.getColor(   0, 126, 155 ) },
-				{ SWTResourceManager.getColor( 243, 146,  75 ), SWTResourceManager.getColor( 255, 146,  75 ) },
-				{ SWTResourceManager.getColor( 206, 135, 163 ), SWTResourceManager.getColor( 226, 135, 163 ) },
-				{ SWTResourceManager.getColor( 124, 103,  74 ), SWTResourceManager.getColor( 144, 103,  74 ) },
-				{ SWTResourceManager.getColor( 194, 187, 169 ), SWTResourceManager.getColor( 214, 187, 169 ) },
-				{ SWTResourceManager.getColor( 104,  73,  71 ), SWTResourceManager.getColor( 124,  73,  71 ) },
-				{ SWTResourceManager.getColor(  75, 196, 213 ), SWTResourceManager.getColor(  75, 196, 233 ) },
-				{ SWTResourceManager.getColor( 206, 232, 229 ), SWTResourceManager.getColor( 206, 252, 229 ) },
-				{ SWTResourceManager.getColor( 169, 221, 199 ), SWTResourceManager.getColor( 169, 241, 199 ) },
-				{ SWTResourceManager.getColor( 100, 165, 197 ), SWTResourceManager.getColor( 100, 165, 217 ) },
-				{ SWTResourceManager.getColor( 150, 147, 178 ), SWTResourceManager.getColor( 150, 147, 198 ) },
-				{ SWTResourceManager.getColor( 200, 222, 182 ), SWTResourceManager.getColor( 200, 242, 182 ) },
-				{ SWTResourceManager.getColor( 147, 208, 197 ), SWTResourceManager.getColor( 147, 228, 197 ) }
-		};
-	}
-	
 	public WaveformStyleProvider(IEclipsePreferences store) {
-		setupDefaults();
+		Display display = Display.getCurrent();
+		DefaultWaveformStyleProvider defaultStyleProvider = new DefaultWaveformStyleProvider();
 		Preferences defaultPrefs= store.parent().parent().node("/"+DefaultScope.SCOPE+"/"+PreferenceConstants.PREFERENCES_SCOPE);
-		HashMap<WaveformColors, RGB> colorPref = new HashMap<>();
 		for (WaveformColors c : WaveformColors.values()) {
 			String key = c.name() + "_COLOR";
-			String prefValue = store.get(key, defaultPrefs.get(key,  "")); //$NON-NLS-1$
+			String prefValue = store.get(key, defaultPrefs.get(key,  defaultStyleProvider.getColor(c).toString())); //$NON-NLS-1$
 			RGB rgb = StringConverter.asRGB(prefValue);
-			colorPref.put(c, rgb);
+			colors[c.ordinal()] = new Color(display, rgb);
 		}
 		trackHeigth = store.getInt(PreferenceConstants.TRACK_HEIGHT, defaultPrefs.getInt(PreferenceConstants.TRACK_HEIGHT,  25)); //$NON-NLS-1$
+		nameFont = display.getSystemFont();
 	}	
-	/** 
-	 * needs redraw() afterwards
-	 * @param colourMap
-	 */
-    public void initColors(HashMap<WaveformColors, RGB> colourMap) {
-        Display d = parent.getDisplay();
-        if (colourMap != null) {
-            for (WaveformColors c : WaveformColors.values()) {
-                if (colourMap.containsKey(c))
-                    colors[c.ordinal()] = new Color(d, colourMap.get(c));
-            }
-        }
-    }
-
+	
 	@Override
 	public Font getNameFont() {
 		return nameFont;