Set Default Marker Style for TBrowser

I would like to tell TBrowser to use MarkerStyle(6) for graphs by default, such that I do not have to set it manually for every single graph I draw. gStyle->SetMarkerStyle(6) seems not to work. Is there another way? I am using ROOT version 5.28

You don’t say where your graphs come from.
If you are reading them from a file, search maybe for “ForceStyle” and “UseCurrentStyle” in http://root.cern.ch/download/doc/ROOTUsersGuideHTML/ch09s11.html

Yes, I read them from a file. This is exactly, what I was looking for and could not find. Thanks!