Can you get food poisoning from eating bratwursts?

Of course, the bratwurst I am familiar with starts out grey, the red version is smoked but is sometimes called just plain bratwurst.

Of course if it turns gray that would be a sign of spoilage and you would not want to eat it. Most is pre-cooked and is safer than raw if s stored properly, you just cook it to warm it up. The raw version needs to be throughly cooked.