APO DP - graphic settings for colours for key figures

We are using APO DP version 5.0.

We want to make sure that every time the graphic is used in interactive DP, for a given key figure, the same colour is always used for that key figure.

We have tried to set the colour via the legend and saved the 'graphical user settings', but the system is not saving these settings properly. So, for example, for key figure x we set a colour of black, and save the settings. But next time we go into interactive DP, we see the default colour eg pink, when we <u>should</u> have seen black.

Any ideas?

Thanks,

Bob Austin