What is misleading about the title of the novel, The Autobiography of an Ex Colored Man?​

The Autobiography of an Ex-Colored Man (1912/1927) by James Weldon Johnson is the fictional account of a young biracial man, referred to only as the "Ex-Colored Man," living in post-Reconstruction era America in the late nineteenth and early twentieth centuries. He lives through a variety of experiences, including witnessing a lynching, that convince him to "pass" as white to secure his safety and advancement, but he feels as if he has given up his dream of "glorifying" the black race by composing ragtime music.

Yes, just because one had a disability doesn't change the meaning of the word. they would most likely have an (whatever language) sign language to sign what's going on. it would be the same even if he was blind.