Can my High Gloss Black speakers look new again?


I recently picked up a pair of Platinum Solos from A'gon and want to get the tops to look a bit better if possible. Any suggestions on ways to make the verylight scratchs look less noticeable without a major undertaking? Will guitar polish make 'em look better? Are there products out there specifically for this purpose? Any info is appreciated! Thanks.
wrtickle
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When I owned my '74 Triumph TR-6 show car I used a plastic polish called PLEXUS. Incredible stuff. Easily took the fog and the scratches out of the soft plastic rear window. made it look like new glass in minutes. Should do the trick on Piano Black without scratching.
You may also try "zymol". What ever you do, test a small spot out of direct view.

Tim