Adbhutasagara 48.168

48.168

mukhaṃ cūrṇasamaṃ taptaṃ liṅgaṃ sadyo mariṣyataḥ|
tathā|
līlaṃ vā yadi vā śyāmaṃ tāmraṃ vā yadi vāruṇam|
mukhārdhe cānyathā varṇe mukhārdhe riṣṭamucyate||

A face like powder, burning hot, is an immediate mark of one about to die. / Likewise: / Blue, or dark, or coppery, or reddish; / and if one half of the face is of another colour, on half the face, it is declared a sign of death.