The exterior of the building was recently in urgent need of maintenance. Meanwhile, the opportunity arose to repaint the building according to a historically based colour scheme. In 1994 paint scrapes were done on sections of the front and courtyard - at the front of the house some seventeen layers were uncovered!

The result of the paint scrapes corresponded with Dr Purcell's findings that the original, late 18th century colour scheme would have been a fudge-brown for the whole façade. From layer five onwards, which probably dates around 1800, contrasting colours appear for the mouldings and pilasters in comparison with the rest of the wall. The colours themselves also become lighter and more attractive.

The first layers uncovered in the courtyard revealed a black dado line separating a main- and dado field. In recent years the courtyard walls have been painted a uniform colour.

Although difficult to date the differing layers' colour schemes, the SACHM decided, in conjunction with the National Monuments Council, to use colour schemes probably dating from the beginning of the nineteenth century. It was also decided to choose attractive colours that would distinguish the house from the towering office blocks as well as hopefully better withstand the effects of pollution. The main colour of the walls of the façade is now butterscotch, with the mouldings and pilasters in pale cream. The main field in the courtyard is also painted butterscotch, with a dado and a darker shade for the dado field. The exterior woodwork remains green.