diff --git a/Machines/Atari2600.cpp b/Machines/Atari2600.cpp
index 9a9d15fa0..543d1b048 100644
--- a/Machines/Atari2600.cpp
+++ b/Machines/Atari2600.cpp
@@ -43,13 +43,22 @@ void Machine::get_output_pixel(uint8_t *pixel, int offset)
 		{164, 186, 250},	{166, 201, 250},	{164, 224, 251},	{165, 251, 213},
 		{185, 251, 187},	{201, 250, 168},	{225, 235, 160},	{252, 223, 145}
 	};
+	const uint8_t alphaValues[8] =
+	{
+//		0, 64, 108, 144, 176, 200, 220, 255
+//	};
+//
+//	{
+		69, 134, 108, 161, 186, 210, 235, 255
+	};
 
 	// TODO: almost everything!
-	uint8_t outputColour = playFieldPixel ? _playfieldColour : _backgroundColour;
+	uint8_t playfieldColour = ((_playfieldControl&6) == 2) ? ((x < 20) ? _player0Colour : _player1Colour) : _playfieldColour;
+	uint8_t outputColour = playFieldPixel ? playfieldColour : _backgroundColour;
 	pixel[0] = palette[outputColour >> 4][0];
 	pixel[1] = palette[outputColour >> 4][1];
 	pixel[2] = palette[outputColour >> 4][2];
-	pixel[3] = (outputColour & 14) << 4;
+	pixel[3] = alphaValues[(outputColour >> 1)&7];
 }
 
 void Machine::output_pixels(int count)
diff --git a/OSBindings/Mac/Clock Signal/CSCathodeRayView.m b/OSBindings/Mac/Clock Signal/CSCathodeRayView.m
index 0231a64b4..43b44bfad 100644
--- a/OSBindings/Mac/Clock Signal/CSCathodeRayView.m	
+++ b/OSBindings/Mac/Clock Signal/CSCathodeRayView.m	
@@ -49,7 +49,7 @@
 	CVDisplayLinkStart(displayLink);
 
 	glEnable(GL_BLEND);
-	glBlendFunc(GL_SRC_ALPHA, GL_ONE);
+	glBlendFunc(GL_SRC_ALPHA, GL_ZERO);
 }
 
 static CVReturn DisplayLinkCallback(CVDisplayLinkRef displayLink, const CVTimeStamp *now, const CVTimeStamp *outputTime, CVOptionFlags flagsIn, CVOptionFlags *flagsOut, void *displayLinkContext)
diff --git a/Outputs/CRT.cpp b/Outputs/CRT.cpp
index c97fdc2e1..04ef64c36 100644
--- a/Outputs/CRT.cpp
+++ b/Outputs/CRT.cpp
@@ -54,7 +54,7 @@ CRT::CRT(int cycles_per_line, int height_of_display, int number_of_buffers, ...)
 
 	// width should be 1.0 / _height_of_display, rotated to match the direction
 	float angle = atan2f(scanSpeedYfl, scanSpeedXfl);
-	float halfLineWidth = (float)_height_of_display * 2.0f;
+	float halfLineWidth = (float)_height_of_display * 1.9f;
 	_widths[0][0] = (sinf(angle) / halfLineWidth) * UINT32_MAX;
 	_widths[0][1] = (cosf(angle) / halfLineWidth) * UINT32_MAX;