What is the story on 'de-yellowing' the headlight lenses?

I would like to install superwhite bulbs but not if they will get lost in crummy lenses. Compared to my other vehicles the T100's lamps look like whale oil lanterns.


Jeff
96 T100 SR5 4WD Ext Cab, Warn Hubs, HD torsion bars, Bilsteins, Camper Shell, TJM bar, factory 31 x 10.5's, Powertrax No-slip rear, Recaro driver's bucket