agree: change dwm-autodarkmode signal to USR1 and leave restarsig signal to HUP

dwm.c

@@ -1744,10 +1744,10 @@ setup(void)
 	sa.sa_handler = SIG_IGN;
 	sigaction(SIGCHLD, &sa, NULL);
 
-	/* set color mode on SIGHUP */
+	/* set color mode on SIGUSR1 */
 	sigemptyset(&sa.sa_mask);
 	sa.sa_handler = colormodehandler;
-	sigaction(SIGHUP, &sa, NULL);
+	sigaction(SIGUSR1, &sa, NULL);
 
 	/* clean up any zombies (inherited from .xinitrc etc) immediately */
 	while (waitpid(-1, NULL, WNOHANG) > 0);