These revolvers are desireable. But I doubt most people would be willing to pay the price for new production. There will always be legacy buyers, but there are not enough of those to merit the investment and startup costs. And that assumes that they have trained labor at Colt.
Colt sold off (for scrap, I believe) the machinery as it was worn out. This happened after the bankruptcy and purchase by the current owners around 1990 (22 years ago).
IF Colt did come out with a new production revolver, it would likely be in the vein (mechanically) of the Mark V series. There have been rumors of such over the last couple of years.
Let the dead lie.