diff --git a/emgba.dcp b/emgba.dcp
index e2a0bc3..837a491 100644
--- a/emgba.dcp
+++ b/emgba.dcp
@@ -20,7 +20,7 @@ Name={--filter, Filter}
 Values={none, Sharp}, {blend, Soft}, {deflicker, Normal}, {scale2xex, Scale2×Ex}, {scale2xplus, Scale2×Plus}, {scale2x, Scale2×}, {eagle2x, Eagle2×}, {scan2x, Scan2×}
 
 Name={--matrix, Color Matrix}
-Values={identity, Identity}, {gba, GBA}, {gbc, GBC}, {gbi, GBI}, {nds, NDS}, {palm, Palm}, {psp, PSP}, {vba, VBA}
+Values={identity, Identity}, {gba, GBA}, {gbi, GBI}, {nds, NDS}, {palm, Palm}, {psp, PSP}, {vba, VBA}
 
 Name={--input-gamma, Decoding Gamma}
 Values={1.0, 1.0}, {1.2, 1.2}, {1.4, 1.4}, {1.6, 1.6}, {1.8, 1.8}, {2.0, 2.0}, {2.2, 2.2}, {2.4, 2.4}
diff --git a/source/gx_preview.c b/source/gx_preview.c
index b474ee0..8444dae 100644
--- a/source/gx_preview.c
+++ b/source/gx_preview.c
@@ -51,21 +51,17 @@ static GXColorS10 color[][3] = {
 		{ + 0, + 0, + 0 },
 		{ + 0, + 0, + 0 }
 	}, [MATRIX_GBA] = {
-		{ -13, + 0, + 0 },
+		{ -15, + 0, + 0 },
 		{ + 0, + 0, + 0 },
-		{ +13, + 0, + 0 }
-	}, [MATRIX_GBC] = {
-		{ -13, + 0, + 0 },
-		{ + 0, + 0, + 0 },
-		{ +13, + 0, + 0 }
+		{ +15, + 0, + 0 }
 	}, [MATRIX_GBI] = {
 		{ -27, + 0, + 0 },
 		{ + 0, + 0, + 0 },
 		{ +27, + 0, + 0 }
 	}, [MATRIX_NDS] = {
-		{ -13, + 0, + 0 },
+		{ -32, + 0, + 0 },
 		{ + 0, + 0, + 0 },
-		{ +13, + 0, + 0 }
+		{ +32, + 0, + 0 }
 	}, [MATRIX_PALM] = {
 		{ -23, + 0, + 0 },
 		{ + 0, + 0, + 0 },
@@ -88,25 +84,20 @@ static GXColor kcolor[][4] = {
 		{   0,   0, 255 },
 		{  54, 182,  18 }
 	}, [MATRIX_GBA] = {
-		{ 219,  28,  34 },
-		{  48, 168,  15 },
-		{   0,  59, 207 },
-		{  69, 132,  54 }
-	}, [MATRIX_GBC] = {
-		{ 222,  29,  36 },
-		{  46, 168,  18 },
-		{   0,  57, 201 },
-		{  71, 131,  53 }
+		{ 209,  32,  50 },
+		{  61, 170,  19 },
+		{   0,  54, 186 },
+		{  71, 136,  48 }
 	}, [MATRIX_GBI] = {
 		{ 238,  12,   7 },
 		{  45, 195,   9 },
 		{   0,  48, 239 },
 		{  60, 149,  46 }
 	}, [MATRIX_NDS] = {
-		{ 217,  24,  15 },
-		{  51, 167,  19 },
-		{   0,  64, 221 },
-		{  65, 132,  59 }
+		{ 222,  26,  26 },
+		{  65, 164,  43 },
+		{   0,  65, 186 },
+		{  67, 135,  53 }
 	}, [MATRIX_PALM] = {
 		{ 212,  19,  22 },
 		{  66, 173,  31 },
diff --git a/source/main.c b/source/main.c
index 2d4e338..c72d3f8 100644
--- a/source/main.c
+++ b/source/main.c
@@ -1567,8 +1567,6 @@ static void preinit(int argc, char **argv)
 					state.matrix = MATRIX_IDENTITY;
 				else if (strcmp(optarg, "gba") == 0)
 					state.matrix = MATRIX_GBA;
-				else if (strcmp(optarg, "gbc") == 0)
-					state.matrix = MATRIX_GBC;
 				else if (strcmp(optarg, "gbi") == 0)
 					state.matrix = MATRIX_GBI;
 				else if (strcmp(optarg, "nds") == 0)
diff --git a/source/state.h b/source/state.h
index d2ba7c6..2c7277c 100644
--- a/source/state.h
+++ b/source/state.h
@@ -73,7 +73,6 @@ typedef struct {
 	enum {
 		MATRIX_IDENTITY = 0,
 		MATRIX_GBA,
-		MATRIX_GBC,
 		MATRIX_GBI,
 		MATRIX_NDS,
 		MATRIX_PALM,