Hi, all! I need some advice. I reborned a Flo Mini Elf kit for my cousin a few months ago. She changes her clothes often and spends a lot of time playing with her. In a recent picture, there are now blue-gray stains on her face (especially her nose) and on her hands. What caused this? Can she be fixed, and if so, can it be prevented in the future? She was sealed with Genesis satin varnish. Thank you so much!