Original sentence: Other colours occur naturally in clouds.The colour of a cloud, as seen from the Earth, tells much about what is going on inside the cloud.These tiny particles of water are densely packed and sunlight cannot penetrate far into the cloud before it is reflected out, giving a cloud its characteristic white colour
Edited sentence: Other colors occur naturally in clouds.The color of a cloud, as seen from the Earth, tells much about what is going on inside the cloud.These tiny particles of water are densely packed and sunlight cannot penetrate far into the cloud before it is reflected out, giving a cloud its characteristic white color