Litronic Bulb Question

[GWPORSCHE]

After an incident, my right side factory-equipped litronic light was replaced. The problem is the new passenger side and driver side low beam color does not match. The old light is closer to white with a slight green tint to it while the older driver side light is much more purple. The car is a MY2000 w/ 76M Miles.

Here are some other facts:
1) Both lights turned on for the first time after being off for a few hours starts of the same purplish color with the newer light turning to a lighter color within minutes, while the older light stayed relatively purple.

2) Both light output seems the same

3) Pulled the bulbs out and discovered that they have different part numbers on them:

Left Bulb (older):
Philips Germany D2S 35W E 85123 e1 03V 9MO1

Right Bulb (newer)
Philips Germany D2S 35W 85122 e1 03V M407

Can someone please tell me the if the difference in color is just due to the difference in the age of the lights or is it because of the different part# found on the bulbs? Thank you.