German carriages in Dutch service

Predicting passenger numbers is often difficult for train companies and when the predictions are to low, a shortage of material will ensue. Building trains or carriages is time-consuming and is capital intensive, so the Dutch railways (NL) bought carriages of the German railways (DB). After a while the German carriages are painted in the yellow-and-blue paint of the NS, but the carriage on the right is still in its original German colours.