Question

why is moon in white colour

Answer 1

The color of the moon is not white but ash gray regolith with were poor albedo and it does not emit any light of its own . The light that reflects of the moon is sun light and it is not always white, during moon rise and moon set it tales on reddish color.

Answer 2

Moon is which in color because it reflects the light of sun but u may think that the sun is yellow in color. The only reason the sun is yellow is because of our atmosphere. Due to the way light scatters through the atmosphere the bluer wavelengths of light are lost giving the sun a more yellow look, even though it is actually more white than any other colour in reality.