The first time I visited #Brisbane was 2014 or 2015, when Central Station still had CRT screens for their PIDs. When I went back this year they had been replaced with flatscreens, but one thing has remained true: a visitor’s very first impression of Central as they step off the airport train is that the Airport–Gold Coast line PIDs use the exact same yellow-green-brown colour as a newborn baby’s first-ever poo.