i went and bought a new set of bulbs myself to see what can be done to make them invisible.
here's the bulb:
BMW OEM part:
Bulb under normal light:
Bulb in lower light (inside it's box):
as you can see, the bulb is already reflective, just not reflective enough. these bulbs are quite pricey, so i'm still figuring out what to do to get these to be less orange.