diff -uprN clean/config.h urgent/config.h
--- clean/config.h	2007-12-19 14:42:05.000000000 -0500
+++ urgent/config.h	2007-12-19 14:42:45.000000000 -0500
@@ -7,9 +7,11 @@
 #define NORMBORDERCOLOR		"#cccccc"
 #define NORMBGCOLOR		"#cccccc"
 #define NORMFGCOLOR		"#000000"
+#define NORMURGENTCOLOR	"#0f0"
 #define SELBORDERCOLOR		"#0066ff"
 #define SELBGCOLOR		"#0066ff"
 #define SELFGCOLOR		"#ffffff"
+#define SELURGENTCOLOR "#0f0"
 
 /* tagging */
 const char tags[][MAXTAGLEN] = { "1", "2", "3", "4", "5", "6", "7", "8", "www" };
diff -uprN clean/dwm.c urgent/dwm.c
--- clean/dwm.c	2007-11-21 15:18:41.000000000 -0500
+++ urgent/dwm.c	2007-12-19 14:41:25.000000000 -0500
@@ -52,7 +52,7 @@
 /* enums */
 enum { BarTop, BarBot, BarOff };			/* bar position */
 enum { CurNormal, CurResize, CurMove, CurLast };	/* cursor */
-enum { ColBorder, ColFG, ColBG, ColLast };		/* color */
+enum { ColBorder, ColFG, ColBG, ColUrgent, ColLast };	/* color */
 enum { NetSupported, NetWMName, NetLast };		/* EWMH atoms */
 enum { WMProtocols, WMDelete, WMName, WMState, WMLast };/* default atoms */
 
@@ -67,6 +67,7 @@ struct Client {
 	long flags;
 	unsigned int border, oldborder;
 	Bool isbanned, isfixed, ismax, isfloating, wasfloating;
+	Bool isurgent;
 	Bool *tags;
 	Client *next;
 	Client *prev;
@@ -129,7 +130,7 @@ void destroynotify(XEvent *e);
 void detach(Client *c);
 void detachstack(Client *c);
 void drawbar(void);
-void drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]);
+void drawsquare(Bool filled, Bool empty, Bool urgent, unsigned long col[ColLast]);
 void drawtext(const char *text, unsigned long col[ColLast]);
 void *emallocz(unsigned int size);
 void enternotify(XEvent *e);
@@ -150,6 +151,7 @@ unsigned int idxoftag(const char *tag);
 void initfont(const char *fontstr);
 Bool isoccupied(unsigned int t);
 Bool isprotodel(Client *c);
+Bool isurgent(unsigned int t);
 Bool isvisible(Client *c);
 void keypress(XEvent *e);
 void killclient(const char *arg);
@@ -186,6 +188,7 @@ void unmapnotify(XEvent *e);
 void updatebarpos(void);
 void updatesizehints(Client *c);
 void updatetitle(Client *c);
+void updatewmhints(Client *c);
 void view(const char *arg);
 void viewprevtag(const char *arg);	/* views previous selected tags */
 int xerror(Display *dpy, XErrorEvent *ee);
@@ -540,11 +543,11 @@ drawbar(void) {
 		dc.w = textw(tags[i]);
 		if(seltags[i]) {
 			drawtext(tags[i], dc.sel);
-			drawsquare(sel && sel->tags[i], isoccupied(i), dc.sel);
+			drawsquare(sel && sel->tags[i], isoccupied(i), isurgent(i), dc.sel);
 		}
 		else {
 			drawtext(tags[i], dc.norm);
-			drawsquare(sel && sel->tags[i], isoccupied(i), dc.norm);
+			drawsquare(sel && sel->tags[i], isoccupied(i), isurgent(i), dc.norm);
 		}
 		dc.x += dc.w;
 	}
@@ -562,7 +565,7 @@ drawbar(void) {
 		dc.x = x;
 		if(sel) {
 			drawtext(sel->name, dc.sel);
-			drawsquare(sel->ismax, sel->isfloating, dc.sel);
+			drawsquare(sel->ismax, sel->isfloating, sel->isurgent, dc.sel);
 		}
 		else
 			drawtext(NULL, dc.norm);
@@ -572,12 +575,12 @@ drawbar(void) {
 }
 
 void
-drawsquare(Bool filled, Bool empty, unsigned long col[ColLast]) {
+drawsquare(Bool filled, Bool empty, Bool urgent, unsigned long col[ColLast]) {
 	int x;
 	XGCValues gcv;
 	XRectangle r = { dc.x, dc.y, dc.w, dc.h };
 
-	gcv.foreground = col[ColFG];
+	gcv.foreground = urgent ? col[ColUrgent] : col[ColFG];
 	XChangeGC(dpy, dc.gc, GCForeground, &gcv);
 	x = (dc.font.ascent + dc.font.descent + 2) / 4;
 	r.x = dc.x + 1;
@@ -945,6 +948,16 @@ isprotodel(Client *c) {
 }
 
 Bool
+isurgent(unsigned int t) {
+       Client *c;
+
+       for(c = clients; c; c = c->next)
+               if(c->isurgent && c->tags[t])
+                       return True;
+       return False;
+}
+
+Bool
 isvisible(Client *c) {
 	unsigned int i;
 
@@ -1145,6 +1158,10 @@ propertynotify(XEvent *e) {
 			case XA_WM_NORMAL_HINTS:
 				updatesizehints(c);
 				break;
+			case XA_WM_HINTS:
+				updatewmhints(c);
+				drawbar();
+				break;
 		}
 		if(ev->atom == XA_WM_NAME || ev->atom == netatom[NetWMName]) {
 			updatetitle(c);
@@ -1488,9 +1505,11 @@ setup(void) {
 	dc.norm[ColBorder] = getcolor(NORMBORDERCOLOR);
 	dc.norm[ColBG] = getcolor(NORMBGCOLOR);
 	dc.norm[ColFG] = getcolor(NORMFGCOLOR);
+	dc.norm[ColUrgent] = getcolor(NORMURGENTCOLOR);
 	dc.sel[ColBorder] = getcolor(SELBORDERCOLOR);
 	dc.sel[ColBG] = getcolor(SELBGCOLOR);
 	dc.sel[ColFG] = getcolor(SELFGCOLOR);
+	dc.norm[ColUrgent] = getcolor(SELURGENTCOLOR);
 	initfont(FONT);
 	dc.h = bh = dc.font.height + 2;
 
@@ -1820,6 +1839,16 @@ updatetitle(Client *c) {
 		gettextprop(c->win, wmatom[WMName], c->name, sizeof c->name);
 }
 
+void
+updatewmhints(Client *c) {
+	XWMHints *wmh;
+
+	if(wmh = XGetWMHints(dpy, c->win)) {
+		c->isurgent = (wmh->flags & XUrgencyHint) ? True : False;
+		XFree(wmh);
+	}
+}
+
 /* There's no way to check accesses to destroyed windows, thus those cases are
  * ignored (especially on UnmapNotify's).  Other types of errors call Xlibs
  * default error handler, which may call exit.  */