What is the lighter colored band called

The light colored bands are called zones. These are regions where gas in Jupiter's atmosphere is rising upwards. The dark bands are called belts.

What is the lighter colored band called (Zones)

Explanation:

The process by which the band's formation occurs is called convection.

Two types of bands are formed in the Jupiter atmosphere.

The light-colored bands are called ((Zones)), In these regions, gas is rising towards upward. The dark-colored bands are known as belts. In this region gas moves towards the downward.

These color differences occur due to the difference in the temperature and the chemical composition difference.

((Thus the lighter colored band called Zones, and the lighter color is due to ammonia ice, that's why it colder as compared to belts)).