turned red, blushed
Обе покраснели.
They both blushed.
У него покраснели глаза.
His eyes turned red.
И Том, и Мэри покраснели.
Both Tom and Mary blushed.
Глаза у него покраснели.
У неё покраснели глаза.
Her eyes turned red.
Оба покраснели.
Both of them blushed.