How to get branches coloured in TFile::DrawMap

ROOT
1

Hello!
I do

root [0] TFile f("file.root")   
root [1] f.DrawMap()

As a result I get all baskets of all branches coloured in black.
Only StreamerInfo and Keys are distinguishable.
What should I do to mark out specific branches in colour?
Thank you, Misha.

2

tree.GetBranch("something")->SetFillColor(mycolor);
Rene