Red tint around axis

When I do this:

	TH1F * hist = new TH1F("hist","hist",7,-0.5,6.5);

	TCanvas * c1 = new TCanvas;
	c1->SetFillColor(0);
	
	gStyle->SetOptStat(0);
	hist->SetTitle("");
	hist->Draw();
	

there is a a red tint on the x axis and the right vertical axis. I attached a picture. Does anyone know how to get rid of this red tint?


This has been fixed some time ago. Which ROOT version are you using ?