I use the Atmosphere object to simulate dynamic skies.
Because of the (seemingly arbitrary) max value of Atmosphere.Haze, I cannot fully cover the sky with the desired color. This is especially noticeable during night time, when the haze color is much darker than the white skybox it covers.
A simple fix would be to increase the max value of the Atmosphere.Haze property so that it can fully cover the skybox.
Here’s a little clip showcasing the issue: