User-defined charts

Hello,

I'¨m trying to build some user defined charts for several users to
maintain consistent formatting etc. I know how to make the charts,
saving them and most settings but there is one issue I haven't solved
yet.

The user defined charts will be used on lots of different datatypes.
For exampel, one of the charts will have 2 dataseries but another will
have 10. They should still have the same type of formatting in all
series. Lets say they want a Line chart and the the lines should be of
a spesific thickness (thicker than default). How can I make sure that
all lines will have this thickness, no matter how many dataseries
there are? Do I have to create a user defined chart with a maximum
number of dataseries and format all series to my specifications?

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Fredrik E. Nilsen