Custom armour skins with new colours - purple for light armour and red for heavy armour.
The armour skins are in pak2 file. Just unzip the file to your Kingpin folder and the file will be placed in the correct location ( kingpin/main folder).
If you already have a pak2 file in your main folder then extract the new pak2 to a temporary folder somewhere and rename it to another number such as pak3, pak4 etc which you don't already have. Then copy it to your kingpin/main folder.