As mentioned above, Hank kills the Sun, and instantly the sky was cloaked in darkness. However, regular object lighting remained for the rest of the episode. The sky did not change in Madness Combat 4: Apotheosis, but a moon was seen to depict night, and Hank's headlights on his car were on.
Like Madness Apotheosis, a moon was seen to depict night. Halfway through the episode, Hank discovers a small, red, newly formed sun most likely created by the Improbability Drive. The sky is still black from there on, and there is no more mention of the red sun for the remainder of the episode.
At the beginning, the sky is still black like in Depredation. However, the sky can be seen from a window with the same tint as in Antipathy halfway through the episode. Near the end, the sky is red and static, possibly because it is changing, and because Tricky was messing with Jesus and/or the Drive's power.
In this episode, the red sun has majorly expanded, and the horizon of the sky half red and half black with a slight tint of grey in the middle. The length of expansion can be seen over Madness 5.5, and it is unknown how long Hank had remained dead until he was revived to see the newly colored sky.
The red sun has expanded even more in this episode, painting the sky a solid red. It stays this way during Madness Combat 8: Inundation, but at the end, when the Primary Improbability Drive was damaged, the sky was seen cracking open, sending out the normality restoration blast.
The sky is seen mostly red in the beginning of this episode, but it is half red and half black in the end, with a slight tint of grey in the middle. Several blasts from the normality restoration are happening in the background, causing the sky to crack and break apart.
The sky in Abrogation is very similar to the sky in Aggregation, however the blackness of the sky has expanded more, and normality restoration blasts are more frequent.