wptw,
Actually, the Delt pledge pin is white with four 5 pointed stars -- one in each corner, and a square in the middle. The COLONY pledge badge is the same design, but the enamel is purple. There is no Star of David.
There are graphic representations of all of the Delt badges on
www.delts.org. Use the www resources button and then the graphics button.
Regards,
DeltAlum