---

I am a firm believer in using the brand of gauges as the engine.

Yamaha motor = Yamaha gauges
OMC motor = OMC gauges
etc...

As far as the material. Taking it off and polishing is what many people do.
Much easier than taking care of that much teak on the dash.

Click on image below for larger version.
[img]http://www.whalercentral.com/images/articles/System_Check/Tech_Series_Instruments_t1.jpg[/img]