diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/include/config.h nethack-3.4.3-dungeoncolors/include/config.h
--- nethack-3.4.3-orig/include/config.h	2003-12-10 14:43:36.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/include/config.h	2003-12-10 13:58:28.000000000 +0200
@@ -348,6 +348,8 @@
  * bugs left here.
  */
 
+#define USER_DUNGEONCOLOR
+
 /*#define GOLDOBJ */	/* Gold is kept on obj chains - Helge Hafting */
 /*#define AUTOPICKUP_EXCEPTIONS */ /* exceptions to autopickup */
 
diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/include/extern.h nethack-3.4.3-dungeoncolors/include/extern.h
--- nethack-3.4.3-orig/include/extern.h	2003-12-09 17:23:52.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/include/extern.h	2003-12-10 13:59:29.000000000 +0200
@@ -457,6 +457,9 @@
 #ifdef REINCARNATION
 E void FDECL(assign_rogue_graphics, (BOOLEAN_P));
 #endif
+#ifdef USER_DUNGEONCOLOR
+E void FDECL(assign_colors, (uchar *,int,int,int));
+#endif
 
 /* ### dungeon.c ### */
 
diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/include/rm.h nethack-3.4.3-dungeoncolors/include/rm.h
--- nethack-3.4.3-orig/include/rm.h	2003-12-09 17:23:52.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/include/rm.h	2003-12-10 14:00:14.000000000 +0200
@@ -226,6 +226,9 @@
 extern const struct symdef defsyms[MAXPCHARS];	/* defaults */
 extern uchar showsyms[MAXPCHARS];
 extern const struct symdef def_warnsyms[WARNCOUNT];
+#ifdef USER_DUNGEONCOLOR
+extern uchar showsymcolors[MAXPCHARS];
+#endif
 
 /*
  * Graphics sets for display symbols
diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/README.dungeoncolors nethack-3.4.3-dungeoncolors/README.dungeoncolors
--- nethack-3.4.3-orig/README.dungeoncolors	1970-01-01 02:00:00.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/README.dungeoncolors	2003-12-10 14:41:44.000000000 +0200
@@ -0,0 +1,69 @@
+
+ This is Dungeoncolors patch v1.2 for nethack v3.4.3
+
+ This patch allows the user to change the colors of the dungeon
+ features and traps, by defining them in the configuration file.
+
+ This patch works in all window ports that use character graphics,
+ and has been tested on the TTY, X11, and Qt ports.
+
+ Changing the colors can be done with putting the following lines
+ into the configuration file:
+
+DUNGEONCOLOR= 0  7  7  7  7  7  7  7  7  7 \
+              7  7  7  3  3  3  3  6  2  7 \
+              7  7  7  7  3  3  7  7  11 7 \
+              4  4  6  1  3  3  3  3  6  7 \
+              4
+
+TRAPCOLORS= 6 6 7 3 6 1 7 12 4 9 0 0 3 3 5 5 13 7 7 12 12 10
+
+ ``DUNGEONCOLOR'' are in the same order as ``DUNGEON'', and
+ ``TRAPCOLORS'' as ``TRAPS''
+
+And here's another set of colors for the dungeon, with unlit
+corridors darker than lit, and white stairs, just like Slash'em.
+
+DUNGEONCOLOR= 0  7  7  7  7  7  7  7  7  7 \
+              7  7  7  3  3  3  3  6  2  7 \
+              0  7  15 15 3  3  7  7  11 7 \
+              4  4  6  1  3  3  3  3  6  7 \
+              4
+
+
+
+ The colors are:
+
+  0 black
+  1 red
+  2 green
+  3 brown
+  4 blue
+  5 magenta
+  6 cyan
+  7 gray
+  8 "no color"
+  9 orange
+ 10 light green
+ 11 yellow
+ 12 light blue
+ 13 light magenta
+ 14 light cyan
+ 15 white
+
+
+ CHANGES:
+
+ v1.2:
+  - updated to 3.4.3 codebase
+
+ v1.1:
+  - updated to 3.4.2 codebase
+
+ v0.1:
+  - first version.
+
+
+--
+ Pasi Kallinen
+ pkalli@cs.joensuu.fi
diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/src/drawing.c nethack-3.4.3-dungeoncolors/src/drawing.c
--- nethack-3.4.3-orig/src/drawing.c	2003-12-09 17:23:52.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/src/drawing.c	2003-12-10 14:05:42.000000000 +0200
@@ -24,6 +24,10 @@
 uchar monsyms[MAXMCLASSES] = DUMMY; /* the current monster display symbols */
 uchar warnsyms[WARNCOUNT]  = DUMMY;  /* the current warning display symbols */
 
+#ifdef USER_DUNGEONCOLOR
+uchar showsymcolors[MAXPCHARS] = DUMMY; /* current feature display colors */
+#endif
+
 /* Default object class symbols.  See objclass.h. */
 const char def_oc_syms[MAXOCLASSES] = {
 /* 0*/	'\0',		/* placeholder for the "random class" */
@@ -651,6 +655,21 @@
 		       graph_chars[i] : defsyms[i+offset].sym);
 }
 
+#ifdef USER_DUNGEONCOLOR
+void
+assign_colors(graph_colors, glth, maxlen, offset)
+register uchar *graph_colors;
+int glth, maxlen, offset;
+{
+    register int i;
+
+    for (i = 0; i < maxlen; i++)
+	showsymcolors[i+offset] =
+	    (((i < glth) && (graph_colors[i] < CLR_MAX)) ?
+	     graph_colors[i] : defsyms[i+offset].color);
+}
+#endif
+
 void
 switch_graphics(gr_set_flag)
 int gr_set_flag;
@@ -659,6 +678,9 @@
 	default:
 	case ASCII_GRAPHICS:
 	    assign_graphics((uchar *)0, 0, MAXPCHARS, 0);
+#ifdef USER_DUNGEONCOLOR
+	    assign_colors((uchar *)0, 0, MAXPCHARS, 0);
+#endif
 #ifdef PC9800
 	    if (ascgraphics_mode_callback) (*ascgraphics_mode_callback)();
 #endif
diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/src/files.c nethack-3.4.3-dungeoncolors/src/files.c
--- nethack-3.4.3-orig/src/files.c	2003-12-09 17:23:52.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/src/files.c	2003-12-10 14:07:29.000000000 +0200
@@ -1810,6 +1810,16 @@
 	    len = get_uchars(fp, buf, bufp, translate, FALSE,
 			     MAXECHARS, "EFFECTS");
 	    assign_graphics(translate, len, MAXECHARS, MAXDCHARS+MAXTCHARS);
+#ifdef USER_DUNGEONCOLOR
+	} else if (match_varname(buf, "DUNGEONCOLOR", 10)) {
+	    len = get_uchars(fp, buf, bufp, translate, FALSE,
+			     MAXDCHARS, "DUNGEONCOLOR");
+	    assign_colors(translate, len, MAXDCHARS, 0);
+	} else if (match_varname(buf, "TRAPCOLORS", 7)) {
+	    len = get_uchars(fp, buf, bufp, translate, FALSE,
+			     MAXTCHARS, "TRAPCOLORS");
+	    assign_colors(translate, len, MAXTCHARS, MAXDCHARS);
+#endif
 
 	} else if (match_varname(buf, "OBJECTS", 3)) {
 	    /* oc_syms[0] is the RANDOM object, unused */
diff -Nurd --exclude-from=diff_ignore_files.txt nethack-3.4.3-orig/src/mapglyph.c nethack-3.4.3-dungeoncolors/src/mapglyph.c
--- nethack-3.4.3-orig/src/mapglyph.c	2003-12-09 17:23:52.000000000 +0200
+++ nethack-3.4.3-dungeoncolors/src/mapglyph.c	2003-12-10 14:21:37.000000000 +0200
@@ -25,7 +25,11 @@
 
 #ifdef TEXTCOLOR
 #define zap_color(n)  color = iflags.use_color ? zapcolors[n] : NO_COLOR
+#ifndef USER_DUNGEONCOLOR
 #define cmap_color(n) color = iflags.use_color ? defsyms[n].color : NO_COLOR
+#else
+#define cmap_color(n) color = iflags.use_color ? showsymcolors[n] : NO_COLOR
+#endif
 #define obj_color(n)  color = iflags.use_color ? objects[n].oc_color : NO_COLOR
 #define mon_color(n)  color = iflags.use_color ? mons[n].mcolor : NO_COLOR
 #define invis_color(n) color = NO_COLOR
@@ -126,8 +130,19 @@
 	    /* provide a visible difference if normal and lit corridor
 	     * use the same symbol */
 	    if (iflags.use_color &&
+#ifndef USER_DUNGEONCOLOR
 		offset == S_litcorr && ch == showsyms[S_corr])
 		color = CLR_WHITE;
+#else
+		offset == S_litcorr && ch == showsyms[S_corr] &&
+		    showsymcolors[S_corr] == showsymcolors[S_litcorr]) {
+	if (showsymcolors[S_corr] != CLR_WHITE) {
+	    color = showsymcolors[S_litcorr] = CLR_WHITE;
+	} else {
+	    color = showsymcolors[S_litcorr] = CLR_GRAY;
+	}
+    }
+#endif /* USER_DUNGEONCOLOR */
 	    else
 #endif
 	    cmap_color(offset);