diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java
index 12ee1b34..66c7cf20 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/util/ColorFunctions.java
@@ -128,6 +128,21 @@ public class ColorFunctions
 				? hsla[hslIndex] > 65
 				: hsla[hslIndex] < 35;
 		}
+
+		@Override
+		public String toString() {
+			String name;
+			switch( hslIndex ) {
+				case 0: name = "spin"; break;
+				case 1: name = increase ? "saturate" : "desaturate"; break;
+				case 2: name = increase ? "lighten" : "darken"; break;
+				case 3: name = increase ? "fadein" : "fadeout"; break;
+				default: throw new IllegalArgumentException();
+			}
+			return String.format( "%s(%.0f%%%s%s)", name, amount,
+				(relative ? " relative" : ""),
+				(autoInverse ? " autoInverse" : "") );
+		}
 	}
 
 	//---- class HSLIncreaseDecrease ------------------------------------------
@@ -148,5 +163,10 @@ public class ColorFunctions
 		public void apply( float[] hsla ) {
 			hsla[3] = clamp( amount );
 		}
+
+		@Override
+		public String toString() {
+			return String.format( "fade(%.0f%%)", amount );
+		}
 	}
 }
diff --git a/flatlaf-core/src/main/java/com/formdev/flatlaf/util/DerivedColor.java b/flatlaf-core/src/main/java/com/formdev/flatlaf/util/DerivedColor.java
index de366890..73b55587 100644
--- a/flatlaf-core/src/main/java/com/formdev/flatlaf/util/DerivedColor.java
+++ b/flatlaf-core/src/main/java/com/formdev/flatlaf/util/DerivedColor.java
@@ -59,4 +59,17 @@ public class DerivedColor
 	public ColorFunction[] getFunctions() {
 		return functions;
 	}
+
+	@Override
+	public String toString() {
+		StringBuilder buf = new StringBuilder();
+		buf.append( super.toString() );
+
+		for( ColorFunction function : functions ) {
+			buf.append( '\n' );
+			buf.append( function.toString() );
+		}
+
+		return buf.toString();
+	}
 }
diff --git a/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/uidefaults/UIDefaultsDump.java b/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/uidefaults/UIDefaultsDump.java
index 7bd19ddc..e3333082 100644
--- a/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/uidefaults/UIDefaultsDump.java
+++ b/flatlaf-testing/src/main/java/com/formdev/flatlaf/testing/uidefaults/UIDefaultsDump.java
@@ -67,8 +67,6 @@ import com.formdev.flatlaf.testing.FlatTestLaf;
 import com.formdev.flatlaf.ui.FlatLineBorder;
 import com.formdev.flatlaf.ui.FlatUIUtils;
 import com.formdev.flatlaf.util.ColorFunctions.ColorFunction;
-import com.formdev.flatlaf.util.ColorFunctions.Fade;
-import com.formdev.flatlaf.util.ColorFunctions.HSLIncreaseDecrease;
 import com.formdev.flatlaf.util.DerivedColor;
 import com.formdev.flatlaf.util.StringUtils;
 import com.formdev.flatlaf.util.SystemInfo;
@@ -409,7 +407,7 @@ public class UIDefaultsDump
 			DerivedColor derivedColor = (DerivedColor) color;
 			for( ColorFunction function : derivedColor.getFunctions() ) {
 				out.print( " " );
-				dumpColorFunction( out, function );
+				out.print( function.toString() );
 			}
 		}
 	}
@@ -421,27 +419,6 @@ public class UIDefaultsDump
 			: String.format( "#%06x", color.getRGB() & 0xffffff );
 	}
 
-	private void dumpColorFunction( PrintWriter out, ColorFunction function ) {
-		if( function instanceof HSLIncreaseDecrease ) {
-			HSLIncreaseDecrease func = (HSLIncreaseDecrease) function;
-			String name;
-			switch( func.hslIndex ) {
-				case 0: name = "spin"; break;
-				case 1: name = func.increase ? "saturate" : "desaturate"; break;
-				case 2: name = func.increase ? "lighten" : "darken"; break;
-				case 3: name = func.increase ? "fadein" : "fadeout"; break;
-				default: throw new IllegalArgumentException();
-			}
-			out.printf( "%s(%.0f%%%s%s)", name, func.amount,
-				(func.relative ? " relative" : ""),
-				(func.autoInverse ? " autoInverse" : "") );
-		} else if( function instanceof Fade ) {
-			Fade func = (Fade) function;
-			out.printf( "fade(%.0f%%)", func.amount );
-		} else
-			throw new IllegalArgumentException( "unknown color function: " + function );
-	}
-
 	private void dumpFont( PrintWriter out, Font font ) {
 		String strStyle = font.isBold()
 			? font.isItalic() ? "bolditalic" : "bold"