Discussion about the Korg PolySix synthesizer

Anyone have a polysix that is just extremely dull - looking?

I am wondering what would be the safest cleaner/wax to use on the 
painted finish of the control panel; I tried in small spots to use a 
guitar polish I have and while it brightened the finish it may be too 
shiny and annoying.  Anyone have any ideas as to what might be used to 
get the dullness buffed out?  I only care about it because I may be 
building a new case.  Thanks.