Tremper Albino vs Tremper Albino

This photo contains the Tremper albino from above and a 2 year-old Tremper albino. As you can see there is a significant color difference between the two animals. There is a lot of variability in the Tremper line, possibly indicating the presence of polygenes.
I have several Tremper albinos and no two look exactly alike in their pigmentation. They range from yellow/white through pink/orange to orange/brown.