God must be very old, and therefore they depict a form of the Lord like a very old man. But in the same Brahma Samhita , that is contradicted: although He is the oldest of all living entities , He has His eternal form as a fresh youth.
"You are the original lamp.Other incarnations may possess the same candle power as the original lamp but the original lamp is the beginning of all light" Lord Brahma, in "Prayers Offered by Lord Brahma to Lord Krsna," KRSNA BOOK,
Blue is one aspect of the legend of Krishna that has remain unchanged through time and geography. We look at what this “blue magic” is all about, and why even Krishna’s sworn enemies were irresistibly drawn to it.