diff ce35d395ee8cbe7a6340429a93a16322f0feab93 uncommitted
--- a/sys/src/cmd/paint.c
+++ b/sys/src/cmd/paint.c
@@ -1,5 +1,6 @@
 #include <u.h>
 #include <libc.h>
+#include <bio.h>
 #include <draw.h>
 #include <event.h>
 #include <keyboard.h>
@@ -462,7 +463,50 @@
 	update(nil);
 }
 
+Biobuf*
+palopen(int mode)
+{
+	char *home, path[128];
+
+	if((home = getenv("home")) == nil)
+		return nil;
+	snprint(path, sizeof(path), "%s/lib/paintpal", home);
+	free(home);
+	return Bopen(path, mode);
+}
+
 void
+savepal(void)
+{
+	Biobuf *bfd;
+	int i;
+
+	if((bfd = palopen(OWRITE)) == nil)
+		return;
+	for(i = 0; i < nelem(c64); i++)
+		Bprint(bfd, "%#06x\n", c64[i]);
+	Bterm(bfd);
+}
+
+void
+loadpal(void)
+{
+	Biobuf *bfd;
+	char *ln;
+	int i;
+
+	if((bfd = palopen(OREAD)) == nil)
+		return;
+	for(i = 0; i < nelem(c64); i++){
+		if((ln = Brdstr(bfd, '\n', 1)) == nil)
+			break;
+		c64[i] = strtol(ln, nil, 0);
+		free(ln);
+	}
+	Bterm(bfd);
+}
+
+void
 drawpal(void)
 {
 	Rectangle r, rr;
@@ -549,6 +593,7 @@
 					c64[i] = c;
 					freeimage(pal[i]);
 					pal[i] = allocimage(display, Rect(0, 0, 1, 1), RGB24, 1, c<<8|0xff);
+					savepal();
 					drawpal();
 				}
 			}
@@ -636,6 +681,7 @@
 	}
 
 	/* palette initialization */
+	loadpal();
 	for(i=0; i<nelem(pal); i++){
 		pal[i] = allocimage(display, Rect(0, 0, 1, 1), RGB24, 1,
 			c64[i % nelem(c64)]<<8 | 0xFF);