Like all SPT rolling stock of the period, the Class 320 was painted in the orange/black livery until 1997, when the carmine/cream livery was progressively phased in. Between 2002 and 2004, the Class 320 fleet was given an interior refurbishment, with new seat covers and flooring vinyl, improved interior lighting and electronic and audible destination information systems installed. The units were also given a revised SPT carmine and cream livery, the most noticeable difference being the passenger doors were all cream.