You are buying a custom made Police Hat Challenge Coin.  One side has a thin blue line in the middle (and the words "Sometimes There's Justice" "Sometimes There's Just Us" on it.  The letters are in a gun metal grey color.  The other side is actually two toned (hard to tell in the photo).  The top of the hat is a dark navy blue and the visor portion is black.  The police badge on that side is also a gun metal grey color.  You can see the colors more clearly on the last two photographs.  The Coin is 2 inches in length and 1.25 inches in height.

I have several challenge coins up for auction so please check them out at my ebay store.  None of these coins were personally given to me.  I buy coins from a variety of sources (personal collections, wholesalers, manufacturers, etc.).