Color Change problem

Hey, I was trying to change the color for some GUI but it doesn’t seem to be working quite right. Anybody know what I am doing wrong? Used this as a reference: Documentation

string.Format("You terminated <color=blue>{0}</color>", k.Killed + "    </color>(in<color=orange> " + NetworkManager.Instance.MyPlayer.plRank.ToString() + "1st</color>" + ")"

The following uses the plain string.Format without mixing it with concatenation like @neonblitzer said. Additionally I removed the second closing tag like @Lachee1 said.

string.Format("You terminated <color=blue>{0}</color> (in <color=orange>{1} 1st</color>)", k.Killed, NetworkManager.Instance.MyPlayer.plRank.ToString());