diff --git a/src/scripts/Profiles/6BIT_YUV_Analog/Dragon.txt b/src/scripts/Profiles/6BIT_YUV_Analog/Dragon.txt
index 40a81d4b..567c4ba5 100644
--- a/src/scripts/Profiles/6BIT_YUV_Analog/Dragon.txt
+++ b/src/scripts/Profiles/6BIT_YUV_Analog/Dragon.txt
@@ -2,3 +2,4 @@ sampling=2,1,1,1,0,0,2,8,0,29,23,133,95,40,100,0,35
 geometry=76,54,272,208,320,240,1,1,3,8,7159090,456,5000,312,2,0,0
 palette=Dragon-CoCo_Full
 output_invert=2
+border_colour=3
diff --git a/src/scripts/Profiles/6BIT_YUV_Analog/Spectrum_48K.txt b/src/scripts/Profiles/6BIT_YUV_Analog/Spectrum_48K.txt
index 17612c81..92892ef1 100644
--- a/src/scripts/Profiles/6BIT_YUV_Analog/Spectrum_48K.txt
+++ b/src/scripts/Profiles/6BIT_YUV_Analog/Spectrum_48K.txt
@@ -2,3 +2,4 @@ sampling=7,1,1,0,1,1,2,8,0,108,65,176,125,255,230,0,150
 geometry=68,54,272,200,384,288,1,1,3,8,7000000,448,5000,312,5,0,0
 palette=Spectrum_48K_9Col
 output_invert=2
+border_colour=3
diff --git a/src/scripts/Profiles/6BIT_YUV_Analog/Tandy_CoCo_PAL.txt b/src/scripts/Profiles/6BIT_YUV_Analog/Tandy_CoCo_PAL.txt
index 6c0af7db..19166219 100644
--- a/src/scripts/Profiles/6BIT_YUV_Analog/Tandy_CoCo_PAL.txt
+++ b/src/scripts/Profiles/6BIT_YUV_Analog/Tandy_CoCo_PAL.txt
@@ -2,3 +2,4 @@ sampling=13,1,1,1,0,0,2,8,0,64,54,133,95,84,100,0,75
 geometry=72,54,272,208,320,240,1,1,3,8,7119090,456,5000,312,3,0,0
 palette=Dragon-CoCo_Full
 output_invert=2
+border_colour=3