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diff --git a/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/ColorUtil.java b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/ColorUtil.java
new file mode 100644
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+++ b/bundles/org.simantics.scenegraph/src/org/simantics/scenegraph/utils/ColorUtil.java
@@ -0,0 +1,86 @@
+/*******************************************************************************
+ * Copyright (c) 2007, 2010 Association for Decentralized Information Management
+ * in Industry THTH ry.
+ * All rights reserved. This program and the accompanying materials
+ * are made available under the terms of the Eclipse Public License v1.0
+ * which accompanies this distribution, and is available at
+ * http://www.eclipse.org/legal/epl-v10.html
+ *
+ * Contributors:
+ *     VTT Technical Research Centre of Finland - initial API and implementation
+ *******************************************************************************/
+package org.simantics.scenegraph.utils;
+
+import java.awt.Color;
+
+/**
+ * @author Tuukka Lehtonen
+ */
+public class ColorUtil {
+
+    /**
+     * Blend two colors (AWT) by linearly interpolating between the specified
+     * ratio (0-1). 0 means <code>src</code> color only and 1 means
+     * <code>dst</code> color only.
+     * 
+     * @param src
+     * @param dst
+     * @param ratio a value between [0,1]
+     * @return a new instance of Color, containing the interpolated result.
+     *         Remember to dispose of this color when its no longer needed!
+     */
+    public static Color blend(Color src, Color dst, double ratio) {
+        if (ratio < 0 || ratio > 1)
+            throw new IllegalArgumentException("expected t in [0,1], got t " + ratio);
+
+        double r1 = src.getRed();
+        double g1 = src.getGreen();
+        double b1 = src.getBlue();
+        double a1 = src.getAlpha();
+        double r2 = dst.getRed();
+        double g2 = dst.getGreen();
+        double b2 = dst.getBlue();
+        double a2 = dst.getAlpha();
+
+        double r = r1 + (r2 - r1) * ratio;
+        double g = g1 + (g2 - g1) * ratio;
+        double b = b1 + (b2 - b1) * ratio;
+        double a = a1 + (a2 - a1) * ratio;
+
+        return new Color((int) r, (int) g, (int) b, (int) a);
+    }
+
+    /**
+     * @param c
+     * @param alpha
+     * @return
+     */
+    public static Color withAlpha(Color c, int alpha) {
+        return new Color(c.getRed(), c.getGreen(), c.getBlue(), alpha);
+    }
+
+    /**
+     * @param c
+     * @param alpha
+     * @return
+     */
+    public static Color withAlpha(Color c, float alpha) {
+        return withAlpha(c, (int) (255.0f * alpha));
+    }
+    
+    public static Color gamma(Color c, double y) {
+    	double oneOverGamma = 1.0D / y;
+    	int r = c.getRed();
+    	int g = c.getGreen();
+    	int b = c.getBlue();
+    	r = (int) ( 255. * ( Math.pow( r / 255.0D, oneOverGamma ) + 0.5D ) );
+    	g = (int) ( 255. * ( Math.pow( g / 255.0D, oneOverGamma ) + 0.5D ) );
+    	b = (int) ( 255. * ( Math.pow( b / 255.0D, oneOverGamma ) + 0.5D ) );
+	    if ( r > 255 ) r = 255;    	
+	    if ( g > 255 ) g = 255;    	
+	    if ( b > 255 ) b = 255;    	
+    	
+    	return new Color(r, g, b, c.getAlpha());
+    }    
+
+}