If you decide that you want to "enhance" the appearance of your tail lights or turn signals, you have a couple of options.
You can change out the tail light housing for a clear housing with and LED board. You can alter the color of the turn signal lenses. Or, for a little more contrast in lighting and a little less money spent, you can alter the power of the bulb in the tail light and replace the turn signals with LEDs. As of today, no one has experiemented with LED turnsignals. On some bikes, the replacement of the standard filament bulb with an LED buld reuslts in fast flashing and low light output.
You can get the lenses for the brake light in CLEAR. Turn signal lesnes are available in either CLEAR or SMOKE variations. Please consider the visibility of the turn signal or brake light, if you choose to alter the lense color.
Clear Tail Light Lense
http://www.denniskirk.com/jsp/product_c ... Id=&mmyId=
These are clear tail lenses and LED tail light options that are a direct replacement for the factory housing.
These can also be purchased from a company called ClearAlternatives.
http://clearalternatives.com/Merchant2/ ... e=Marauder
Turn Signal Lense
Again, these can be purchased from either DennisKirk or ClearAlternatives.
http://clearalternatives.com/Merchant2/ ... =CRUISERSS
It may be possible to find replacement lenses from more distributors. Most of the Suzuki cruisers share the same turn signal lenses. So, if you can find them under a different model, they should fit. Just make sure you get the standard ciriclualr lense.
For a chart showing alternate bulbs which will fit the GZ and their power and light output ratings, see this link:
http://faq.ninja250.org/wiki/I_want_tai ... 6_contrast