Why is my leopard gecko changing colors?

 
Why is my leopard gecko changing colors?
Normally his body is a lightish yellow color but it seems that its become a purple color like his tail, should I be worried?
answer:
I had a Leopard Gecko and I found out that the reason they change colors is because they are about to shed their skin and grow bigger

Did you know that the nutrients they get from the food they eat goes to their tails

Source(s):

Personal Experience
all reptiles and amphibians will lighten or darken in color depending on,,,1temperature(colder is darker)2stress level(more stressed is darker)or 3 feeling sick
its secretly a chamelion? o.0

Source(s):

cows