YOM plate help. What colors? 47 Washington

I just bought a YOM plate for my 47, but it had been wire brushed. I wanna repaint it the original colors, but i cant find any pics of one.

Any help?

its a king county plate as well.

 

looks like it was green on aluminum

http://www.worldlicenceplates.com/jpglps/USA_WA_GI4_1940's.jpg

 

found my 47 under the floor of the garage.douglas county.it was white /green cleaned it up re painted no more taxs for Mr. Mike[47 ply club cp]Christopher... ...from the high and lonesome....

 

Yep, aluminum with green letters.