I really have no idea how to clean it, but I think it was green at one time. Maybe brown?? 

It is quite patinaed, may be due to age, smoke or poor storage. Bought at an estate sale for myself. 

Decided to quit eBay within the year and just getting rid of things little by little....

Price reflects how dirty it is. Bulb should be changed because it seems dim.

Please note that the lamp arm does twist and turn to your command.. Just kidding, it moves and stays where you place it. 

Please see pics with it lit on High or low. 

And please ask any questions to help you decide if this should be yours!

Thanks much for looking and please see my other neat vintage items on eBay