They look healthy, for what that's worth. All of these color morphs are line-bred and will eventually revert back to wild form if crossed with other colors though. And sometimes even if kept with their own long enough with no culling. In short, I don't think anything is going on with them. Just might want to move ones you don't care for the look of to another tank if you have one. I personally enjoy cull tanks for the variation, but even in those I pull clear shrimp as I see them so I don't wind up with a tank full of those. But if they have pigmentation, I leave them in there. For pure lines that I want to keep, I pull anything that doesn't look like the parent shrimp and place those in the cull tanks. It's a great excuse to set up more aquariums.
Nothing good happens fast in an ecosystem.