Of some, like the 'kaḷōṭhi', hues brightly gleam,While others, verily, are pitch black, a dark extreme.

This couplet beautifully paints a picture of contrast. It tells us that some things shine brightly, with dazzling colors, almost like precious, glittering stones. They catch the eye and radiate brilliance. On the other hand, some things are described as being completely, intensely black. This contrast reminds us of the natural diversity in the world around us. It could be about different people, their vibrant personalities versus those who are more reserved, or even the varying phases of life – some filled with sparkling joy, others with deep, quiet moments. Both the vibrant and the dark have their own unique presence and significance.