The troposphere does not have a specific color because it is a layer of the atmosphere filled with air. However, it can appear blue during the daytime, primarily due to the scattering of sunlight by the air molecules and small particles in the atmosphere.
This phenomenon is known as Rayleigh scattering. Sunlight consists of various colors, and when it enters the Earth’s atmosphere, shorter wavelengths of light (blues and violets) are scattered more than the longer wavelengths (reds and oranges). Because our eyes are more sensitive to blue light and some of the violet light is absorbed by the ozone layer, we perceive the sky as blue.
At sunrise and sunset, the troposphere may appear red or orange due to the angle of the sun, which causes the light to pass through a greater thickness of atmosphere. This filtering effect allows the longer wavelengths to dominate, creating those warm hues.