Has anyone else noticed the difference in skintones between these G3 Dracs?

Ignore the fact that my monster ball Drac has her bangs plucked out, lol. I was comparing the two and realized that my core refresh drac has a more purple-toned skin tone while monster ball Drac has a warmer, yellower tone. I haven't had her out in the sun or anything, is this normal? I like the purpleish color better and now I think want to get another for an Elissabat custom.