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diff --git a/src/net/sourceforge/plantuml/graphic/SymbolContext.java b/src/net/sourceforge/plantuml/graphic/SymbolContext.java
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+/* ========================================================================
+ * PlantUML : a free UML diagram generator
+ * ========================================================================
+ *
+ * (C) Copyright 2009-2014, Arnaud Roques
+ *
+ * Project Info:  http://plantuml.sourceforge.net
+ * 
+ * This file is part of PlantUML.
+ *
+ * Licensed under The MIT License (Massachusetts Institute of Technology License)
+ * 
+ * See http://opensource.org/licenses/MIT
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining
+ * a copy of this software and associated documentation files (the "Software"),
+ * to deal in the Software without restriction, including without limitation
+ * the rights to use, copy, modify, merge, publish, distribute, sublicense,
+ * and/or sell copies of the Software, and to permit persons to whom the
+ * Software is furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included
+ * in all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
+ * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
+ * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR
+ * IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+ * 
+ *
+ * Original Author:  Arnaud Roques
+ */
+package net.sourceforge.plantuml.graphic;
+
+import net.sourceforge.plantuml.ugraphic.UChangeBackColor;
+import net.sourceforge.plantuml.ugraphic.UChangeColor;
+import net.sourceforge.plantuml.ugraphic.UGraphic;
+import net.sourceforge.plantuml.ugraphic.UStroke;
+
+public class SymbolContext {
+
+	private final HtmlColor backColor;
+	private final HtmlColor foreColor;
+	private final UStroke stroke;
+	private final boolean shadowing;
+	private final double deltaShadow;
+
+	private SymbolContext(HtmlColor backColor, HtmlColor foreColor, UStroke stroke, boolean shadowing,
+			double deltaShadow) {
+		this.backColor = backColor;
+		this.foreColor = foreColor;
+		this.stroke = stroke;
+		this.shadowing = shadowing;
+		this.deltaShadow = deltaShadow;
+		// if (backColor instanceof HtmlColorTransparent) {
+		// throw new UnsupportedOperationException();
+		// }
+	}
+
+	@Override
+	public String toString() {
+		return super.toString() + " backColor=" + backColor + " foreColor=" + foreColor;
+	}
+
+	final public UGraphic apply(UGraphic ug) {
+		return applyStroke(applyColors(ug));
+	}
+
+	public UGraphic applyColors(UGraphic ug) {
+		return ug.apply(new UChangeColor(foreColor)).apply(new UChangeBackColor(backColor));
+	}
+
+	public UGraphic applyStroke(UGraphic ug) {
+		return ug.apply(stroke);
+	}
+
+	public SymbolContext(HtmlColor backColor, HtmlColor foreColor) {
+		this(backColor, foreColor, new UStroke(), false, 0);
+	}
+
+	public SymbolContext withShadow(boolean newShadow) {
+		return new SymbolContext(backColor, foreColor, stroke, newShadow, deltaShadow);
+	}
+
+	public SymbolContext withDeltaShadow(double deltaShadow) {
+		return new SymbolContext(backColor, foreColor, stroke, shadowing, deltaShadow);
+	}
+
+	public SymbolContext withStroke(UStroke newStroke) {
+		return new SymbolContext(backColor, foreColor, newStroke, shadowing, deltaShadow);
+	}
+
+	public SymbolContext withBackColor(HtmlColor backColor) {
+		return new SymbolContext(backColor, foreColor, stroke, shadowing, deltaShadow);
+	}
+
+	public HtmlColor getBackColor() {
+		return backColor;
+	}
+
+	public HtmlColor getForeColor() {
+		return foreColor;
+	}
+
+	public UStroke getStroke() {
+		return stroke;
+	}
+
+	public boolean isShadowing() {
+		return shadowing || deltaShadow > 0;
+	}
+
+	public double getDeltaShadow() {
+		return deltaShadow;
+	}
+
+}