diff --git a/stm-firmware/syscalls.c b/stm-firmware/syscalls.c
index a016d6f..84ee039 100644
--- a/stm-firmware/syscalls.c
+++ b/stm-firmware/syscalls.c
@@ -89,6 +89,12 @@ int _write(int fd, const void *buf, int count)
 {
 	if (fd == 1)
 		uart_send_array_with_dma(&shell_uart, (char *)buf, count);
+	else if (fd == 2) {
+		uart_send_string_with_dma(&shell_uart, "\e[31m");
+		uart_send_array_with_dma(&shell_uart, (char *)buf, count);
+		uart_send_string_with_dma(&shell_uart, "\e[m");
+	}
+
 	return count;
 }