how to fill all histograms as a default

Hi,                                                                                 

I know that to fill a histogram I need to say histo->SetFillColor()                                                                                 

But how can I set this as a default so that if I write the histograms in a file                                                                                 

histo->Write();                                                                                 

It fills all the histograms in the new rootfile.                                                                                 

Thank you,
Nasim. Received on Mon Dec 05 2005 - 18:11:48 MET