diff --git a/code/renderer/tr_cmds.c b/code/renderer/tr_cmds.c
index 8986be28..06a18e80 100644
--- a/code/renderer/tr_cmds.c
+++ b/code/renderer/tr_cmds.c
@@ -435,6 +435,7 @@ void RE_BeginFrame( stereoFrame_t stereoFrame ) {
 			{
 				// clear both, front and backbuffer.
 				qglColorMask(GL_TRUE, GL_TRUE, GL_TRUE, GL_TRUE);
+				qglClearColor(0.0f, 0.0f, 0.0f, 1.0f);
 				
 				qglDrawBuffer(GL_FRONT);
 				qglClear(GL_COLOR_BUFFER_BIT);
diff --git a/code/renderer/tr_init.c b/code/renderer/tr_init.c
index 0fe686a9..d838c614 100644
--- a/code/renderer/tr_init.c
+++ b/code/renderer/tr_init.c
@@ -959,7 +959,7 @@ void R_Register( void )
 	r_znear = ri.Cvar_Get( "r_znear", "4", CVAR_CHEAT );
 	AssertCvarRange( r_znear, 0.001f, 200, qtrue );
 	r_zproj = ri.Cvar_Get( "r_zproj", "64", CVAR_ARCHIVE );
-	r_stereoSeparation = ri.Cvar_Get( "r_stereoSeparation", "32", CVAR_ARCHIVE );
+	r_stereoSeparation = ri.Cvar_Get( "r_stereoSeparation", "64", CVAR_ARCHIVE );
 	r_ignoreGLErrors = ri.Cvar_Get( "r_ignoreGLErrors", "1", CVAR_ARCHIVE );
 	r_fastsky = ri.Cvar_Get( "r_fastsky", "0", CVAR_ARCHIVE );
 	r_inGameVideo = ri.Cvar_Get( "r_inGameVideo", "1", CVAR_ARCHIVE );
diff --git a/code/renderer/tr_shade.c b/code/renderer/tr_shade.c
index 8eb60a6e..33a7f2bf 100644
--- a/code/renderer/tr_shade.c
+++ b/code/renderer/tr_shade.c
@@ -455,9 +455,19 @@ static void ProjectDlightTexture_altivec( void ) {
 		radius = dl->radius;
 		scale = 1.0f / radius;
 
-		floatColor[0] = dl->color[0] * 255.0f;
-		floatColor[1] = dl->color[1] * 255.0f;
-		floatColor[2] = dl->color[2] * 255.0f;
+		if(r_greyscale->integer)
+		{
+			float luminance;
+			
+			luminance = (dl->color[0] * 255.0f + dl->color[1] * 255.0f + dl->color[2] * 255.0f) / 3;
+			floatColor[0] = floatColor[1] = floatColor[2] = luminance;
+		}
+		else
+		{
+			floatColor[0] = dl->color[0] * 255.0f;
+			floatColor[1] = dl->color[1] * 255.0f;
+			floatColor[2] = dl->color[2] * 255.0f;
+		}
 		floatColorVec0 = vec_ld(0, floatColor);
 		floatColorVec1 = vec_ld(11, floatColor);
 		floatColorVec0 = vec_perm(floatColorVec0,floatColorVec0,floatColorVecPerm);
@@ -599,9 +609,20 @@ static void ProjectDlightTexture_scalar( void ) {
 		radius = dl->radius;
 		scale = 1.0f / radius;
 
-		floatColor[0] = dl->color[0] * 255.0f;
-		floatColor[1] = dl->color[1] * 255.0f;
-		floatColor[2] = dl->color[2] * 255.0f;
+		if(r_greyscale->integer)
+		{
+			float luminance;
+			
+			luminance = (dl->color[0] * 255.0f + dl->color[1] * 255.0f + dl->color[2] * 255.0f) / 3;
+			floatColor[0] = floatColor[1] = floatColor[2] = luminance;
+		}
+		else
+		{
+			floatColor[0] = dl->color[0] * 255.0f;
+			floatColor[1] = dl->color[1] * 255.0f;
+			floatColor[2] = dl->color[2] * 255.0f;
+		}
+
 		for ( i = 0 ; i < tess.numVertexes ; i++, texCoords += 2, colors += 4 ) {
 			int		clip = 0;
 			vec3_t	dist;