Sometimes this kind of redundancy is not a bug, it's a rhetorical device. I have no problem with the phrase "orange in color" if it necessary to give the tone of the sentence the right feel for the context, or to imitate the speech patterns of a particular character in a novel or play.

Most of the time, though, you're right; it's simply redundancy, perpetrated by someone too ignorant to know better or too careless to be concerned about word usage.