From cf175a60bde955b7254dfc02a19a068781c5f1df Mon Sep 17 00:00:00 2001
From: rainwarrior <rainwarrior@users.sf.net>
Date: Thu, 25 Aug 2016 12:33:21 +0000
Subject: [PATCH] adding a set of 16 colours to the "unvaried" palette,
 especially useful for Lua overlay graphics

---
 trunk/src/palette.cpp         |  5 +++--
 trunk/src/palettes/palettes.h | 35 ++++++++++++++++++++++++++---------
 2 files changed, 29 insertions(+), 11 deletions(-)

diff --git a/trunk/src/palette.cpp b/trunk/src/palette.cpp
index 4cbde55b..3ab97f4a 100644
--- a/trunk/src/palette.cpp
+++ b/trunk/src/palette.cpp
@@ -528,13 +528,14 @@ void WritePalette(void)
 	int x;
 
 	//set the 'unvarying' palettes to low < 64 palette entries
-	for(x=0;x<7;x++)
+	const int unvaried = sizeof(palette_unvarying)/sizeof(palette_unvarying[0]);
+	for(x=0;x<unvaried;x++)
 		FCEUD_SetPalette(x,palette_unvarying[x].r,palette_unvarying[x].g,palette_unvarying[x].b);
 
 	//clear everything else to a deterministic state.
 	//it seems likely that the text rendering on NSF has been broken since the beginning of fceux, depending on palette entries 205,205,205 everywhere
 	//this was just whatever msvc filled malloc with. on non-msvc platforms, there was no backdrop on the rendering.
-	for(x=7;x<256;x++)
+	for(x=unvaried;x<256;x++)
 		FCEUD_SetPalette(x,205,205,205);
 
 	//sets palette entries >= 128 with the 64 selected main colors
diff --git a/trunk/src/palettes/palettes.h b/trunk/src/palettes/palettes.h
index f604538a..7721bec9 100644
--- a/trunk/src/palettes/palettes.h
+++ b/trunk/src/palettes/palettes.h
@@ -23,15 +23,32 @@ pal rp2c05004[512] = {
 	EMPTY_PALETTE_DEEMPH_X_7
 };
 
-//I think these are used for 'unvarying' palette entries, for the gui
-pal palette_unvarying[7] = {
-{ 0x00<<2,0x00<<2,0x00<<2}, // Black
-{ 0x3F<<2,0x3F<<2,0x34<<2}, // White
-{ 0x00<<2,0x00<<2,0x00<<2}, // Black
-{ 0x1d<<2,0x1d<<2,0x24<<2}, // Greyish
-{ 190,0,0    }, // Redish
-{ 51,255,51}, // Bright green
-{ 49,14,200}, 
+// Fixed palette entries used by the GUI
+pal palette_unvarying[] = {
+{ 0x00<<2,0x00<<2,0x00<<2}, //  0 = Black
+{ 0x3F<<2,0x3F<<2,0x34<<2}, //  1 = White
+{ 0x00<<2,0x00<<2,0x00<<2}, //  2 = Black
+{ 0x1d<<2,0x1d<<2,0x24<<2}, //  3 = Greyish
+{ 190,  0,  0}, //  4 = Reddish
+{  51,255, 51}, //  5 = Bright green
+{  49, 14,200}, //  6 = Ultramarine Blue
+// 16 saturated colors useful for Lua scripts
+{   0,  0,  0}, //  7 = Black
+{   0,  0,128}, //  8 = Dark Blue
+{   0,128,  0}, //  9 = Dark Green
+{   0,128,128}, // 10 = Dark Cyan
+{ 128,  0,  0}, // 11 = Dark Red
+{ 128,  0,128}, // 12 = Dark Magenta
+{ 128,128,  0}, // 13 = Dark Yellow
+{ 128,128,128}, // 14 = Light Grey
+{  64, 64, 64}, // 15 = Dark Grey
+{   0,  0,255}, // 16 = Bright Blue
+{   0,255,  0}, // 17 = Bright Green
+{   0,255,255}, // 18 = Bright Cyan
+{ 255,  0,  0}, // 19 = Bright Red
+{ 255,  0,255}, // 20 = Bright Magenta
+{ 255,255,  0}, // 21 = Bright Yellow
+{ 255,255,255}, // 22 = Bright White
 };