OPT_INTEGER(0, "creation-factor", &creation_factor,
                            N_("Percentage by which creation is weighted")),
                OPT_BOOL(0, "no-dual-color", &simple_color,
-                           N_("color both diff and diff-between-diffs")),
+                           N_("use simple diff colors")),
                OPT_END()
        };
        int i, j, res = 0;