diff --git a/x.c b/x.c
index 2a3bd38..afa06be 100644
--- a/x.c
+++ b/x.c
@@ -2027,6 +2027,8 @@ usage(void)
 int
 main(int argc, char *argv[])
 {
+    int i;
+    char *colval;
 	xw.l = xw.t = 0;
 	xw.isfixed = False;
 	xsetcursor(cursorshape);
@@ -2071,6 +2073,11 @@ main(int argc, char *argv[])
 	case 'v':
 		die("%s " VERSION "\n", argv0);
 		break;
+    case 'C':
+        colval = strtok(EARGF(usage()), "@");
+        i = atoi(strtok(NULL, "@"));
+		colorname[i] = colval;
+		break;
 	default:
 		usage();
 	} ARGEND;