Black Holes and Light?

I am not very good at science, however I heard the color red stretches the farthest as certain light fades (such as natural light from the sun when it sets). That being said, would the same process worked if natural light laws applied to black holes when pulling in light as they normally do? And if so, that is the... show more I am not very good at science, however I heard the color red stretches the farthest as certain light fades (such as natural light from the sun when it sets). That being said, would the same process worked if natural light laws applied to black holes when pulling in light as they normally do?

And if so, that is the last color one would see? Red or violet?
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