This was poted to the same question on the SHAPE message board. In part it reads

"AUSTIN STATE GAZETTE, March 23, 1861, p. 1, c. 5
The Confederate Congress.
The Flag of the Confederacy.

The objection to the first class is that none of them, any considerable distance, could be readily distinguished from the one which they imitate. Whatever attachment may be felt, from association, for "the stars and stripes," (an attachment which your committee may be permitted to say they do not all share,) it is manifest that in inaugurating a new Government from which we have withdrawn, with any propriety, or without encountering very obvious practical difficulties, there is no propriety in retaining the ensign of a Government which, in the opinion of the States composing the Confederacy, had been so oppressive and injurious to their interests as to require their separation from it."

As a re-enactor have you ever had the problem of telling one flag from another?

GP