We recently aquired a mostly completed 1950 66 Row Crop.  The hood is in need of bodywork and paint.  I have seen several photos that show two variations of the hood, some being completly green with others having the raised portion in the center of the hood being painted yellow.

Which is correct? 

Also, is there a color difference in the decals dependant upon the year? 

The serial number on the tractor is 423456.

Thank you in advance for your help.