It is often mistaken that, in the original Story Comic, Newbie's sleeves turn grey in the second panel. However, if you look closer, you can see that he is actually tying on his headband, and the grey sleeves are his gloved hands.
In the 12.5.0 update, the gloves were recoloured to instead become sleeves, as his headband is already on before this panel.
A police car can be found on the exterior of the map.
The secret coin and gem switched places in 12.5.0 update. The reason could possibly be the fact that the coin was more hidden than the gem.
It was one of the oiginal multiplayer maps of 2013, but was removed not to long after it's introduction.
This map also goes by the name Midnight Graveyard.