I am behind the curve on the state of things right now, but I think we need to let the engineers do their thing for a little while longer.
Let them tweak things and improve the system as much as possible. We still don't have recovery rates that are consistent.
If I were them, I would find an alternate source of water. (It may not exist, or be economical.)
Usually the best solution ends up being a combination of multiple small steps in the right direction.
So, are we looking for a new multi-colored paint? Like plaid? Maybe rainbow?
Don't take my word for it, Do your own research! Then you will know it's true!