Adopt style colour for button icons

src/qt/scicon.h

@@ -0,0 +1,24 @@
+// Copyright (c) 2014 The Bitcoin developers
+// Distributed under the MIT software license, see the accompanying
+// file COPYING or http://www.opensource.org/licenses/mit-license.php.
+
+#ifndef BITCOIN_QT_SCICON_H
+#define BITCOIN_QT_SCICON_H
+
+#include <QtCore>
+
+QT_BEGIN_NAMESPACE
+class QColor;
+class QIcon;
+class QString;
+QT_END_NAMESPACE
+
+QImage SingleColorImage(const QString& filename, const QColor&);
+QIcon SingleColorIcon(const QIcon&, const QColor&);
+QIcon SingleColorIcon(const QString& filename, const QColor&);
+QColor SingleColor();
+QIcon SingleColorIcon(const QString& filename);
+QIcon TextColorIcon(const QIcon&);
+QIcon TextColorIcon(const QString& filename);
+
+#endif // BITCOIN_QT_SCICON_H