LED headlights?

Just a side-question to this discussion that may push me over the edge...is there any weight savings to be had by switching to LEDs? I know that headlights are the heaviest component in the car but stock ones are all glass and they're wayyy up front where they have the most (or nearly the most) significant impact on weight distribution.
I'm liking those Grote lights. Looking as stock as possible is a top priority, IMO.