It depends, but most use white because there are so many trees that its not worth the ink/graphite/writing implement. This dates back to the Vikings in Scandinavia
green
Dreams usually represent something that is fully grown. In childhood dreams, trees can represent adults. If you are an adult having this dream then it means you are suffering some sort of loss or abandonment. Without any trees around you, you have no guidance or protection.
Green lizards usually live in green environments, such as the canopyof trees or in grass.
Trees in the rain forest are mostly deciduous trees meaning they have leaves, not needles. Leaves are usually green but can be reddish or yellowish. Some plants have leaves that are almost black. It is unclear from the question what "that colour" is.
An elephant is a usually a dark or light grey. They eat leaves from trees grass in the ground i they live in the wild. If in a zoo they eat veggies
plam trees
green
Anywhere from white through pink to red, depending on the variety of cherry. Cherry Blossom trees are usually a light baby pinkish colour
the leafs on a pine tree don't change colour they stay green all year but the rest of them change colour like the hardwood trees
language groups. source: myself goodbye...
Owls vary on their colour due to environmental changes. They change their colour to match or camouflage into their environment. For example, If they were spotted in the trees by other nocturnal predators then they would camouflage therefore surviving.
Yes as trees with needles are usually Softwood and trees with leaves are usually Hardwood