It is invisible
the white cloud is white
GRAY
The Oort cloud is a region of space surrounding the solar system that is composed of icy objects. It does not emit light itself, so it does not have a specific color.
white and puffy
Cumulus
it depends how heavy cloud is or what color it is.
By the wind
because it is very dense and do not pass the sun light.
Clouds can appear white, gray, or even dark depending on the amount of sunlight they reflect and the thickness of the cloud. The color of a cloud is mainly influenced by the scattering of sunlight by water droplets or ice crystals in the cloud. When sunlight hits a cloud, the water droplets or ice crystals scatter the light in all directions, making the cloud appear white or gray. Thicker clouds can appear darker because they absorb more sunlight and reflect less light.
A certain size to fall - color is irrelevant.
If it is a white or white-ish gray cloud, it could be an ammonia bloom. If the cloud is darker in color, it could be a bacteria bloom.
yes you canm do whatever you want ................................well in a coloring book