What color would an observer on the moon see the sky?

Unlike the Earth – which has an atmosphere that is supported by the cycle of water and various gases, the Moon – has no atmosphere. It is impossible to see a sunset or sunrise on the moon, it is also impossible to see there, such a blue sky that we see on our planet. After all, the sky is essentially an accumulation of gases and the obstruction of light in the layers of the atmosphere, which passes into the visible spectrum of lines. Also, there is no liquid water on the moon, this is another reason why the blue sky is not visible. The only sky that can be seen on the moon is starry and dark.