{
gROOT->ProcessLine(".x grey_pallete_2.C");
gStyle->SetPadRightMargin(0.15);
gStyle->SetOptStat(0);
TH2* h = new TH2F("h","h",20,0,2,20,-2,2);

for(int i=0; i<100000; i++){
  double x=gRandom->Exp(1);
  double y=gRandom->Gaus(0,1);
  //  cout<<x<<" "<<y<<endl;
  h->Fill(x,y);
}

h->Draw("colz");

}