Color option for Draw

[couet]

{
   auto l1 = new TLine(0.1,0.4,0.9,0.4);
   l1->SetLineColor(kRed); l1->Draw();
   auto l2 = new TLine(0.1,0.5,0.9,0.5);
   l2->SetLineColor(kBlue); l2->Draw();
}