Bad? No. Misinformed, yes.
If the person in question were my friend, I would ask them why they do not like people "of that color". Sometimes it's a fairly strange reason- you know, a person of that color did something bad to me when I was young, therefore they are all bad, or "my parents taught me not to trust people of that color". If they are a thinking person, you might be able to reason them out of it. "That person who hurt you was also male. Are all men bad because he was a man, too?" or "Are your parents right about everything? If not, why do think they will be right in this instance?"
I have friends of every color. Their color isn't as important as the fact that they are my friends. And yes, I have prejudices of my own. Once, I was in NYC, and I had to take the 2 Train out to Brooklyn to meet her by myself (at the time, I lived in the 'burbs). And I was reading a book, because she lived at the far end of Brooklyn. At one stop, I looked up, and I was the only white person in the subway car. I felt a flash of unreasoning fear. I was alone in a car where everyone was so different from me. I felt very alone.
At the next stop, a black transit cop came and stood over me, and I felt immediately better. No matter his color, he was there to protect people on the train, and I no longer felt so alone. I'm not sure if that counts as me being bigoted, but that was my experience. Since then, I have tried to treat everyone the same. Color, race, sex, orientation- people are people. None of the other stuff matters.