Śrī Caitanya Caritamrta · Text Madhya 20.330
শুক্ল-রক্ত-কৃষ্ণ-পীত — ক্রমে চারি বর্ণ ।
চারি বর্ণ ধরি’ কৃষ্ণ করেন যুগধর্ম ॥ ৩৩০ ॥
śukla-rakta-kṛṣṇa-pīta — krame cāri varṇa
cāri varṇa dhari’ kṛṣṇa karena yuga-dharma
“In the four yugas — Satya, Tretā, Dvāpara and Kali — the Lord incarnates in four colors: white, red, black and yellow respectively. These are the colors of the incarnations in different millenniums.
Read this verse on Vedabase.ioThis verse has no purport; its meaning is explained by the verses around it.