Hey Albert. It is possible but it may never be exactly as it was. Color changes in comets and related species can be variable depending on age, water quality, food source, genetics and who knows what else. It can be very frustrating.

I purchased my Sarassas with specific markings because I wanted to tell them apart for the most part. Over time half have become pure white and the markings and intensity of the color has changed. Body shape is the only thing that has remained the same.