diff --git a/src/Actor.cpp b/src/Actor.cpp
index 0e487dcd9a..15eab5f0b5 100644
--- a/src/Actor.cpp
+++ b/src/Actor.cpp
@@ -370,21 +370,21 @@ void Actor::PreDraw() // calculate actor properties
 			/* XXX: Should diffuse_blink and diffuse_shift multiply the tempState color? 
 			 * (That would have the same effect with 1,1,1,1, and allow tweening the diffuse
 			 * while blinking and shifting.) */
-			for(int i=0; i<4; i++)
+			for(int i=0; i<NUM_DIFFUSE_COLORS; i++)
 			{
 				tempState.diffuse[i] = bBlinkOn ? m_effectColor1 : m_effectColor2;
 				tempState.diffuse[i].a *= fOriginalAlpha;	// multiply the alphas so we can fade even while an effect is playing
 			}
 			break;
 		case diffuse_shift:
-			for(int i=0; i<4; i++)
+			for(int i=0; i<NUM_DIFFUSE_COLORS; i++)
 			{
 				tempState.diffuse[i] = m_effectColor1*fPercentBetweenColors + m_effectColor2*(1.0f-fPercentBetweenColors);
 				tempState.diffuse[i].a *= fOriginalAlpha;	// multiply the alphas so we can fade even while an effect is playing
 			}
 			break;
 		case diffuse_ramp:
-			for(int i=0; i<4; i++)
+			for(int i=0; i<NUM_DIFFUSE_COLORS; i++)
 			{
 				tempState.diffuse[i] = m_effectColor1*fPercentThroughEffect + m_effectColor2*(1.0f-fPercentThroughEffect);
 				tempState.diffuse[i].a *= fOriginalAlpha;	// multiply the alphas so we can fade even while an effect is playing
@@ -408,7 +408,7 @@ void Actor::PreDraw() // calculate actor properties
 				RageFastCos( fPercentBetweenColors*2*PI + PI * 2.0f / 3.0f ) * 0.5f + 0.5f,
 				RageFastCos( fPercentBetweenColors*2*PI + PI * 4.0f / 3.0f) * 0.5f + 0.5f,
 				fOriginalAlpha );
-			for( int i=1; i<4; i++ )
+			for( int i=1; i<NUM_DIFFUSE_COLORS; i++ )
 				tempState.diffuse[i] = tempState.diffuse[0];
 			break;
 		case wag:
@@ -471,7 +471,7 @@ void Actor::PreDraw() // calculate actor properties
 			tempState = m_current;
 		}
 
-		for( int i=0; i<4; i++ )
+		for( int i=0; i<NUM_DIFFUSE_COLORS; i++ )
 		{
 			tempState.diffuse[i] *= m_internalDiffuse;
 		}
@@ -1186,7 +1186,7 @@ float Actor::GetTweenTimeLeft() const
  * being manipulated, which would add overhead ... */
 void Actor::SetGlobalDiffuseColor( RageColor c )
 {
-	for( int i=0; i<4; i++ ) // color, not alpha
+	for( int i=0; i<NUM_DIFFUSE_COLORS; i++ ) // color, not alpha
 	{
 		for( unsigned ts = 0; ts < m_Tweens.size(); ++ts )
 		{
@@ -1205,7 +1205,7 @@ void Actor::SetGlobalDiffuseColor( RageColor c )
 
 void Actor::SetDiffuseColor( RageColor c )
 {
-	for( int i=0; i<4; i++ )
+	for( int i=0; i<NUM_DIFFUSE_COLORS; i++ )
 	{
 		DestTweenState().diffuse[i].r = c.r;
 		DestTweenState().diffuse[i].g = c.g;
@@ -1224,7 +1224,7 @@ void Actor::TweenState::Init()
 	fSkewY = 0;
 	crop = RectF( 0,0,0,0 );
 	fade = RectF( 0,0,0,0 );
-	for( int i=0; i<4; i++ )
+	for( int i=0; i<NUM_DIFFUSE_COLORS; i++ )
 		diffuse[i] = RageColor( 1, 1, 1, 1 );
 	glow = RageColor( 1, 1, 1, 0 );
 	aux = 0;
@@ -1268,7 +1268,7 @@ void Actor::TweenState::MakeWeightedAverage( TweenState& average_out, const Twee
 	average_out.fade.right	= lerp( fPercentBetween, ts1.fade.right,  ts2.fade.right );
 	average_out.fade.bottom	= lerp( fPercentBetween, ts1.fade.bottom, ts2.fade.bottom );
 
-	for( int i=0; i<4; ++i )
+	for( int i=0; i<NUM_DIFFUSE_COLORS; ++i )
 		average_out.diffuse[i] = lerp( fPercentBetween, ts1.diffuse[i], ts2.diffuse[i] );
 
 	average_out.glow	= lerp( fPercentBetween, ts1.glow,        ts2.glow );
diff --git a/src/Actor.h b/src/Actor.h
index 72a976aa68..3c78536314 100644
--- a/src/Actor.h
+++ b/src/Actor.h
@@ -65,6 +65,13 @@ LuaDeclareType( VertAlign );
 /** @brief The bottom vertical alignment constant. */
 #define align_bottom 1.0f
 
+// This is the number of colors in Actor::diffuse.  Actor has multiple
+// diffuse colors so that each edge can be a different color, and the actor
+// is drawn with a gradient between them.
+// I doubt I actually found all the places that touch diffuse and rely on the
+// number of diffuse colors, so change this at your own risk. -Kyz
+#define NUM_DIFFUSE_COLORS 4
+
 // ssc futures:
 /*
 enum EffectAction
@@ -218,7 +225,7 @@ public:
 		 * @brief Four values making up the diffuse in this TweenState.
 		 *
 		 * 0 = UpperLeft, 1 = UpperRight, 2 = LowerLeft, 3 = LowerRight */
-		RageColor	diffuse[4];
+		RageColor	diffuse[NUM_DIFFUSE_COLORS];
 		/** @brief The glow color for this TweenState. */
 		RageColor	glow;
 		/** @brief A magical value that nobody really knows the use for. ;) */
@@ -433,8 +440,8 @@ public:
 
 	void SetGlobalDiffuseColor( RageColor c );
 
-	virtual void SetDiffuse( RageColor c )		{ for(int i=0; i<4; i++) DestTweenState().diffuse[i] = c; };
-	virtual void SetDiffuseAlpha( float f )		{ for(int i = 0; i < 4; ++i) { RageColor c = GetDiffuses( i ); c.a = f; SetDiffuses( i, c ); } }
+	virtual void SetDiffuse( RageColor c )		{ for(int i=0; i<NUM_DIFFUSE_COLORS; i++) DestTweenState().diffuse[i] = c; };
+	virtual void SetDiffuseAlpha( float f )		{ for(int i = 0; i < NUM_DIFFUSE_COLORS; ++i) { RageColor c = GetDiffuses( i ); c.a = f; SetDiffuses( i, c ); } }
 	float GetCurrentDiffuseAlpha() const		{ return m_current.diffuse[0].a; }
 	void SetDiffuseColor( RageColor c );
 	void SetDiffuses( int i, RageColor c )		{ DestTweenState().diffuse[i] = c; };
diff --git a/src/RollingNumbers.cpp b/src/RollingNumbers.cpp
index 5e8c6389ac..cd0d70c482 100644
--- a/src/RollingNumbers.cpp
+++ b/src/RollingNumbers.cpp
@@ -25,12 +25,12 @@ void RollingNumbers::Load( const RString &sMetricsGroup )
 	UpdateText();
 }
 
-void RollingNumbers::DrawPart(RageColor const& diffuse, RageColor const& stroke,
+void RollingNumbers::DrawPart(RageColor const* diffuse, RageColor const& stroke,
 	float crop_left, float crop_right)
 {
-	for(int i= 0; i < 4; ++i)
+	for(int i= 0; i < NUM_DIFFUSE_COLORS; ++i)
 	{
-		m_pTempState->diffuse[i]= diffuse;
+		m_pTempState->diffuse[i]= diffuse[i];
 	}
 	SetStrokeColor(stroke);
 	m_pTempState->crop.left= crop_left;
@@ -40,16 +40,18 @@ void RollingNumbers::DrawPart(RageColor const& diffuse, RageColor const& stroke,
 
 void RollingNumbers::DrawPrimitives()
 {
-	RageColor c_orig = this->GetDiffuse();
-	RageColor c2_orig = this->GetStrokeColor();
+	RageColor diffuse_orig[NUM_DIFFUSE_COLORS];
+	RageColor diffuse_temp[NUM_DIFFUSE_COLORS];
+	RageColor stroke_orig= GetStrokeColor();
+	RageColor stroke_temp= GetStrokeColor() * LEADING_ZERO_MULTIPLY_COLOR;
+	for(int i= 0; i < NUM_DIFFUSE_COLORS; ++i)
+	{
+		diffuse_orig[i]= m_pTempState->diffuse[i];
+		diffuse_temp[i]= m_pTempState->diffuse[i] * LEADING_ZERO_MULTIPLY_COLOR;
+	}
 	float original_crop_left= m_pTempState->crop.left;
 	float original_crop_right= m_pTempState->crop.right;
 
-	RageColor c = this->GetDiffuse();
-	c *= LEADING_ZERO_MULTIPLY_COLOR;
-	RageColor c2 = this->GetStrokeColor();
-	c2 *= LEADING_ZERO_MULTIPLY_COLOR;
-
 	RString s = this->GetText();
 	int i;
 	// find the first non-zero non-comma character, or the last character
@@ -68,10 +70,11 @@ void RollingNumbers::DrawPrimitives()
 	float f = i / (float)s.length();
 
 	// draw leading part
-	DrawPart(c, c2, max(0, original_crop_left), max(1-f, original_crop_right));
+	DrawPart(diffuse_temp, stroke_temp,
+		max(0, original_crop_left), max(1-f, original_crop_right));
 	// draw regular color part
-	DrawPart(c_orig, c2_orig, max(f, original_crop_left),
-		max(0, original_crop_right));
+	DrawPart(diffuse_orig, stroke_orig,
+		max(f, original_crop_left), max(0, original_crop_right));
 
 	m_pTempState->crop.left= original_crop_left;
 	m_pTempState->crop.right= original_crop_right;
diff --git a/src/RollingNumbers.h b/src/RollingNumbers.h
index 6b1130c412..9dec441c37 100644
--- a/src/RollingNumbers.h
+++ b/src/RollingNumbers.h
@@ -13,7 +13,7 @@ public:
 	void Load( const RString &sMetricsGroup );
 	virtual RollingNumbers *Copy() const;
 
-	void DrawPart(RageColor const& diffuse, RageColor const& stroke,
+	void DrawPart(RageColor const* diffuse, RageColor const& stroke,
 		float crop_left, float crop_right);
 	virtual void DrawPrimitives();
 	virtual void Update( float fDeltaTime );
diff --git a/src/ScreenOptions.cpp b/src/ScreenOptions.cpp
index c91c44d520..72bedd4007 100644
--- a/src/ScreenOptions.cpp
+++ b/src/ScreenOptions.cpp
@@ -673,7 +673,7 @@ void ScreenOptions::PositionRows( bool bTween )
 			i < first_start ||
 			(i >= first_end && i < second_start) ||
 			i >= second_end;
-		for( int j=0; j<4; j++ )
+		for( int j=0; j<NUM_DIFFUSE_COLORS; j++ )
 			tsDestination.diffuse[j].a = bHidden? 0.0f:1.0f;
 		if( !bHidden )
 			pos++;
@@ -686,7 +686,7 @@ void ScreenOptions::PositionRows( bool bTween )
 		tsDestination.Init();
 		tsDestination.pos.y = SEPARATE_EXIT_ROW_Y;
 
-		for( int j=0; j<4; j++ )
+		for( int j=0; j<NUM_DIFFUSE_COLORS; j++ )
 			tsDestination.diffuse[j].a = 1.0f;
 		pSeparateExitRow->SetDestination( tsDestination, bTween );
 	}