White, dark, red, blue, yellow, and grey also, and short long, minute, gross, square and circular, of these twelve varieties is colour which appertains to light. These should be understood by Brahmanas venerable for years, knowing duties, and truthful in speech.
शुक्लं कृष्णं तथा रक्तं नीलं पीतारुणं तथा॥ ह्रस्वं दीर्घ कृशं स्थूलं चतुरस्रं तु वृत्तवत्। एवं द्वादशविस्तार तेजसो रूपमुच्यते॥ विज्ञेयं ब्राह्मणैवृद्धर्धमेज्ञैः सत्यवादिभिः।