diff --git a/dlls/d3dx8/tests/math.c b/dlls/d3dx8/tests/math.c
index fbb8ab30bea..c00eb4c2d3e 100644
--- a/dlls/d3dx8/tests/math.c
+++ b/dlls/d3dx8/tests/math.c
@@ -34,15 +34,16 @@
 
 static void D3DXColorTest(void)
 {
-    D3DXCOLOR color, color1, expected, got;
+    D3DXCOLOR color, color1, color2, expected, got;
     LPD3DXCOLOR funcpointer;
     FLOAT scale;
 
     color.r = 0.2f; color.g = 0.75f; color.b = 0.41f; color.a = 0.93f;
+    color1.r = 0.6f; color1.g = 0.55f; color1.b = 0.23f; color1.a = 0.82f;
+    color2.r = 0.3f; color2.g = 0.5f; color2.b = 0.76f; color2.a = 0.11f;
     scale = 0.3f;
 
 /*_______________D3DXColorLerp________________*/
-    color1.r = 0.6f; color1.g = 0.55f; color1.b = 0.23f; color1.a = 0.82f;
     expected.r = 0.32f; expected.g = 0.69f; expected.b = 0.356f; expected.a = 0.897f;
     D3DXColorLerp(&got,&color,&color1,scale);
     expect_color(expected,got);
@@ -54,6 +55,18 @@ static void D3DXColorTest(void)
     funcpointer = D3DXColorLerp(NULL,NULL,NULL,scale);
     ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
 
+/*_______________D3DXColorModulate________________*/
+    expected.r = 0.18f; expected.g = 0.275f; expected.b = 0.1748f; expected.a = 0.0902f;
+    D3DXColorModulate(&got,&color1,&color2);
+    expect_color(expected,got);
+    /* Test the NULL case */
+    funcpointer = D3DXColorModulate(&got,NULL,&color2);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+    funcpointer = D3DXColorModulate(NULL,NULL,&color2);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+    funcpointer = D3DXColorModulate(NULL,NULL,NULL);
+    ok(funcpointer == NULL, "Expected: %p, Got: %p\n", NULL, funcpointer);
+
 /*_______________D3DXColorNegative________________*/
     expected.r = 0.8f; expected.g = 0.25f; expected.b = 0.59f; expected.a = 0.93f;
     D3DXColorNegative(&got,&color);
diff --git a/include/d3dx8math.inl b/include/d3dx8math.inl
index da11f31c224..21e8fc8a1c2 100644
--- a/include/d3dx8math.inl
+++ b/include/d3dx8math.inl
@@ -31,6 +31,16 @@ static inline D3DXCOLOR* D3DXColorLerp(D3DXCOLOR *pout, CONST D3DXCOLOR *pc1, CO
     return pout;
 }
 
+static inline D3DXCOLOR* D3DXColorModulate(D3DXCOLOR *pout, CONST D3DXCOLOR *pc1, CONST D3DXCOLOR *pc2)
+{
+    if ( !pout || !pc1 || !pc2 ) return NULL;
+    pout->r = (pc1->r) * (pc2->r);
+    pout->g = (pc1->g) * (pc2->g);
+    pout->b = (pc1->b) * (pc2->b);
+    pout->a = (pc1->a) * (pc2->a);
+    return pout;
+}
+
 static inline D3DXCOLOR* D3DXColorNegative(D3DXCOLOR *pout, CONST D3DXCOLOR *pc)
 {
     if ( !pout || !pc ) return NULL;