Are these rocks any good?

[Ed olson]

So when the first tank was set up I had these rocks that came from the original owner's freshwater tank. They had this nice purple color to them. When I drained the 46g bowfront I stored them in a tote with the saltwater from the tank. Now they have lost all their color and are drab and greyish looking, a few are light brownish.
I'm wondering what happened and if they and/or the water they were stored in are still viable. They don't appear to be your normal freshwater rocks but I'd rather be safe than sorry.

 

[Reeflux]

It's better than dry rock...I would use it. But that's just me.

 

[D4jack]

I would cure it and use it. Looks nice! The bacteria and algae has died probably.

 

[Ed olson]

Thanks. I plan on at least putting it in the sump for filtration. It doesn't match the rock in the tank at all.