Based on the aging comparison chart, which morph tends to darken and lose vibrancy as it matures?

Answer

Axanthic.

The chart indicates that the Axanthic morph, which starts silvery/light grey, tends to darken and lose vibrancy as it ages.

Based on the aging comparison chart, which morph tends to darken and lose vibrancy as it matures?
PythonreptilepetsnakeMorph