Because the blind use their hands, ears, and smell to interface with the world, I expect that they would interact in a dream in much the same way.
Also remember that most legally blind people are not 100% devoid of sight. So, I expect that whatever is perceived in shadow during the day might also become similarly represented in a dream.
However, as a regular dreamer, I have dreamed in black & white, color, stick figures, cartoons, and also without any visual at all... just words from a dark screen.
So, I imagine that a person's dreams are not limited to their own personal visual experience.
Also, if one understands that dreams are not merely a creation of the mind... and that they can (& do) come from the spirit as well as from mind, then it is easy to understand that a person who is blind in the body remains capable of seeing in the spirit.