diff --git a/saco/d3d9/common/DXUTgui.cpp b/saco/d3d9/common/DXUTgui.cpp
new file mode 100644
index 0000000..aa6566d
--- /dev/null
+++ b/saco/d3d9/common/DXUTgui.cpp
@@ -0,0 +1,35 @@
+//--------------------------------------------------------------------------------------
+// File: DXUTgui.cpp
+//
+// Desc: 
+//
+// Copyright (c) Microsoft Corporation. All rights reserved.
+//--------------------------------------------------------------------------------------
+#include "dxstdafx.h"
+#include "DXUTgui.h"
+#undef min // use __min instead
+#undef max // use __max instead
+
+//--------------------------------------------------------------------------------------
+void DXUTBlendColor::Init( D3DCOLOR defaultColor, D3DCOLOR disabledColor, D3DCOLOR hiddenColor )
+{
+    for( int i=0; i < MAX_CONTROL_STATES; i++ )
+    {
+        States[ i ] = defaultColor;
+    }
+
+    States[ DXUT_STATE_DISABLED ] = disabledColor;
+    States[ DXUT_STATE_HIDDEN ] = hiddenColor;
+    Current = hiddenColor;
+}
+
+
+//--------------------------------------------------------------------------------------
+void DXUTBlendColor::Blend( UINT iState, float fElapsedTime, float fRate )
+{
+    D3DXCOLOR destColor = States[ iState ];
+    D3DXColorLerp( &Current, &Current, &destColor, 1.0f - powf( fRate, 30 * fElapsedTime ) );
+}
+
+
+
diff --git a/saco/d3d9/common/DXUTgui.h b/saco/d3d9/common/DXUTgui.h
new file mode 100644
index 0000000..203afb8
--- /dev/null
+++ b/saco/d3d9/common/DXUTgui.h
@@ -0,0 +1,38 @@
+//--------------------------------------------------------------------------------------
+// File: DXUTgui.h
+//
+// Desc: 
+//
+// Copyright (c) Microsoft Corporation. All rights reserved.
+//--------------------------------------------------------------------------------------
+#pragma once
+#ifndef DXUT_GUI_H
+#define DXUT_GUI_H
+
+
+//--------------------------------------------------------------------------------------
+// Enums for pre-defined control types
+//--------------------------------------------------------------------------------------
+enum DXUT_CONTROL_STATE
+{
+    DXUT_STATE_NORMAL = 0,
+    DXUT_STATE_DISABLED,
+    DXUT_STATE_HIDDEN,
+    DXUT_STATE_FOCUS,
+    DXUT_STATE_MOUSEOVER,
+    DXUT_STATE_PRESSED,
+};
+
+#define MAX_CONTROL_STATES 6
+
+struct DXUTBlendColor
+{
+    void Init( D3DCOLOR defaultColor, D3DCOLOR disabledColor = D3DCOLOR_ARGB(200, 128, 128, 128), D3DCOLOR hiddenColor = 0 );
+    void Blend( UINT iState, float fElapsedTime, float fRate = 0.7f );
+    
+    D3DCOLOR  States[ MAX_CONTROL_STATES ]; // Modulate colors for all possible control states
+    D3DXCOLOR Current;
+};
+
+
+#endif // DXUT_GUI_H
\ No newline at end of file
diff --git a/saco/d3d9/common/dxstdafx.h b/saco/d3d9/common/dxstdafx.h
index 46d56c8..37a7af4 100644
--- a/saco/d3d9/common/dxstdafx.h
+++ b/saco/d3d9/common/dxstdafx.h
@@ -31,5 +31,6 @@
 #include <strsafe.h>
 
 #include "DXUTmisc.h"
+#include "DXUTgui.h"
 
 #endif // !defined(DXSDK_STDAFX_H)