Tod Molesworth's original website on the 26th Alabama Regiment once contained a number of images of soldiers. Here's what's available now --
http://freepages.genealogy.rootsweb.ancestry.com/~fdmoore/26th%20Alabama.htm

You may already understand the statement about to be made. A wartime image of a soldier in uniform may indicate how other soldiers in his company or regiment were uniformed or equipped when the image was made. It might not. We can only be sure that it's what the soldier looked like on that day.

For a recent published study on Confederate uniforms, see Cadet Gray and Butternut Brown: Notes on Confederate Uniforms by Thomas M Arliskas. Of course the Time-Life edition, Echoes of Glory, is a classic on this subject.