Dodging lightens an image, while burning darkens it. It generally darkens or otherwise gains colour as its exoskeleton hardens. As they grow older, the dorsum darkens and the juvenile pattern gradually disappears. Its reddish-brown color darkens over time, and displays a reddish sheen when polished. With the production of the melanin, the skin color darkens. With the production of the melanin, the skin color darkens, but can also cause sunburn. It darkens deeply as it ages, and white streaks emerge. As the song progresses, the sky darkens, and the singer levitates from the ground. As the eclipse begins, Earth's shadow first darkens the Moon slightly. Shumard oak bark darkens and develops ridges and furrows as it ages. Generally, pigmentation darkens directly with increasing latitude. Children born with some hair colors may find it gradually darkens as they grow. It darkens in colour with prolonged exposure to light. The beard darkens, sometimes turning jet black, and inflates during the display. As the enclosed wasp develops, the pupa darkens.