Phase One Zombies (Green Palette): This initial stage sets the foundation for the zombie transformation process, where the fungus begins to affect the brain, leading to the characteristic green pebble-like appearance.

These zombies are likely still relatively weak and easy to dispatch compared to later phases.

Phase Two Zombies (Yellow Palette): As the fungus continues to adapt and change within the host's body, the zombies progress to this stage, marked by the transition to a yellow pebble-like appearance.

This phase could indicate a further deterioration of cognitive functions and an increase in physical capabilities.

Phase Three Zombies (Orange Palette): This stage represents a significant advancement in the zombification process, with the fungus fully adapted and the zombies gaining enhanced abilities such as regeneration, increased strength, and speed.

Despite these improvements, they remain relatively unintelligent.

Phase Four Zombies (Red Palette): The transition to spore-born zombies adds a new dimension to the threat, as they gain the ability to transform into plant-like entities and release spores that can infect others.

This stage introduces a potential exponential increase in zombie numbers and poses a significant challenge to survivors.