Black Molly losing color?

Question
Hi Karen!

I have a 10 gallon tank with 2 molly juveniles, and 6 juvenile platies.  Since I have so many fish in the tank, they never really grew in size, all being less than 1 inch long.  This tank has been established for over 6 months now.  My platies are doing really well in the tank and are having a field day, but I noticed that my mollies are slowly fading in color.  They were jet black when I got them, but as the months passed, they are now slowly becoming a silver/white color starting from the belly spreading up the face.  One of them even looks like they have green specks on the forehead??!!  I'm not sure what is the cause.  It's not ick from what I can tell since Ive experienced an ick breakout that killed my entire tank.  I have put salt into the water to make it more brackish, and as well as raised the water temp up a bit.  I do weekly 10-15% water changes to keep the ammonia down.  There is also a filter, java moss, driftwood, and shrimp in the aquarium.  I feed them bloodworms, flake food, and the occasional algae wafer.  Am I doing something wrong?  Will my mollies regain their color?  They are swimming around and playing with no fins clamped or anything like that.  

Thanks for your help!

Answer
Hi Judy,
Very strange, it could be a response to some water quality issue. If you are having ammonia trouble than that's definitely the reason. Try to check your ammonia, nitrites, and nitrates.
It may be nothing, but its worth it to check.

If the mollies have no golden sheen to them (if you shine a flashlight on them especially) then it can't be velvet disease. I would just continue the salt and try a few extra water changes and see if that helps!

Best of luck!
Karen~