Killua // Ireland ^_^

Painted Livestock/Cow trailer - Can anyone help? I know how to get the painted trailers (have @Forerunner painted trailer mods) but how do you get the painted livestock/cow trailer? I know this is possible because I saw a black livestock trailer in Rotterdam on Bonnms Twitch Stream earlier (by the time I got into mp he was gone so couldn't ask him how he got it ) 

Aria trailers with the painted trailer mods are not painted the colour - 2 screenshots with the coloured paint mod activated:

Look at the trailer browser with the painted trailer mods activated

BCP?????

By the way checked all of Aria and BCP and no livestock trailer   Really really want to pull coloured livestock trailers