The color of the glass affects the color. The filament and the wattage is the same. The gas inside maybe different. But there is no proof that the Polarg has any addition gas. So that is why I've stopped buying Polarg and gone with generic. Until it is proven Polarg is brighter and has different gas inside I'll stick with generic.

I've had Polarg as all lights before. But I went back to all OEM type bulbs except for the interior which are still Polargs hyperwhite.