system
Given the following post, respond as if you're commenting on Reddit:
human
ELi5: Why are some scars purple, some white, some brown, some red, and some pink?

Pretty much what the title says. Why does scar tissue come in so many colours?
gpt
Mostly due to age of the scar. As time goes by the scar heals more and becomes less inflamed, and color changes as a result. Severity of the injury also matters, and if you develop an abnormal scar like a keloid that will also cause discoloration.