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diff --git a/tikzit/src/common/RColor.h b/tikzit/src/common/RColor.h
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+++ b/tikzit/src/common/RColor.h
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+/*
+ * Copyright 2011  Alex Merry <alex.merry@kdemail.net>
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#import <Foundation/Foundation.h>
+
+#ifndef CGFloat
+#define CGFloat float
+#endif
+
+/**
+ * A lightweight color structure used by RenderContext
+ *
+ * This is mainly to avoid the overhead of ColorRGB when
+ * rendering things not based on a NodeStyle
+ *
+ * All values range from 0.0f to 1.0f.
+ */
+typedef struct {
+    CGFloat red;
+    CGFloat green;
+    CGFloat blue;
+    CGFloat alpha;
+}
+RColor;
+
+/** Solid white */
+static const RColor WhiteRColor __attribute__((unused)) = {1.0, 1.0, 1.0, 1.0};
+/** Solid black */
+static const RColor BlackRColor __attribute__((unused)) = {0.0, 0.0, 0.0, 1.0};
+
+/** Create a color with alpha set to 1.0 */
+RColor MakeSolidRColor (CGFloat red, CGFloat green, CGFloat blue);
+/** Create a color */
+RColor MakeRColor (CGFloat red, CGFloat green, CGFloat blue, CGFloat alpha);
+
+// vi:ft=objc:noet:ts=4:sts=4:sw=4