My original amber headlights still look as good as new.
Except for those blue bulbs, 90% of all headlights with burned inner lenses that I see have standard halogen bulbs in them marked "Phillips H7 55 watt" on them. My OEM bulbs and most bulbs that I pull out of units that are
not burned say "Osram Germany H7 55 watt"...basically.
What I've read suggests that Osram Sylvania and Phillips are probably the same company, but who knows. The headlight burning may just be random.