TGraphPainter and marker

Exist any way, how to get pointer to i-th marker from PolyMarker (from TGraph or TGraphErros object) ?
I need change (for example) color of this one marker (only one marker, not all markers).


you cannot change the attributes of a single marker within a graph. You will need to do 2 graphs, one for each color, or redraw a TMarker on top of the one you want to highlight.