If "one man" in the custom shop is building their SA revolvers, I doubt they have much production potential. Only the most diehard Colt fans will buy them.
The DA market is different. Both S&W and Ruger are strong producers with good reputations. I don't see Colt being able to sell sufficient quantities to make any needed investment profitable. Just my opinion. But I hope they come out with a small D-frame revolver for the home defense/concealed carry market.