I figured that pruple was due to some sort of dyed sand. And since she is full grown, that is about as bright as she's gonna get, unless she's currently in shed. IF you want to bring out her true potential, then I suggest placing her in direct sunlight for about 30 minutes a day. This helps brings out everything, increases appetite, and just makes them so much healthier. Anyway, congrats on the rescue, I hope she enjoys her life much more now.