void hist027_THStack_palette_color()
{
   auto hs = new THStack("hs", "Stacked 1D histograms colored using kOcean palette");

   gStyle->SetPalette(kOcean);

   // Create three 1-d histograms  and add them in the stack
   auto h1st = new TH1F("h1st", "test hstack", 100, -4, 4);
   h1st->FillRandom("gaus", 20000);
   hs->Add(h1st);

   auto h2st = new TH1F("h2st", "test hstack", 100, -4, 4);
   h2st->FillRandom("gaus", 15000);
   hs->Add(h2st);

   auto h3st = new TH1F("h3st", "test hstack", 100, -4, 4);
   h3st->FillRandom("gaus", 10000);
   hs->Add(h3st);

   // draw the stack
   hs->Draw("pfc nostack");
}