TextArea with Custom Image has no flashing indicator

Hey guys, been having an issue with some custom TextArea's that use an input image as the background. When I use the background image, the TextArea has no flashing line to indicate where you are in the textarea.

This is what it looks like idle,

And this is what it looks like active

This is the GUI code I'm using to generate the lines

 if (appSystem.settings.guiId == 1) {
             GUI.SetNextControlName("site-name");
             appAccount.settings.siteName = GUI.TextArea(new Rect(20, 84, 280, 30), appAccount.settings.siteName, inputField);
             GUI.SetNextControlName("user-name");
             appAccount.settings.userName = GUI.TextArea(new Rect(20, 132, 280, 30), appAccount.settings.userName, inputField);
             GUI.SetNextControlName("pass-word");
             appAccount.settings.passWord = GUI.TextArea(new Rect(20, 182, 280, 30), appAccount.settings.passWord, inputField);
 
             if (UnityEngine.Event.current.type == EventType.Repaint)
             {
                 if (GUI.GetNameOfFocusedControl () == "site-name")
                 {
                     if (appAccount.settings.siteName == "Site Name") {
                         appAccount.settings.siteName = "";
                     }
                 } else {
                     if (appAccount.settings.siteName == "") {
                         appAccount.settings.siteName = "Site Name";
                     }
                 }
 
                 if (GUI.GetNameOfFocusedControl () == "user-name")
                 {
                     if (appAccount.settings.userName == "Username") {
                         appAccount.settings.userName = "";
                     }
                 } else {
                     if (appAccount.settings.userName == "") {
                         appAccount.settings.userName = "Username";
                     }
                 }
 
                 if (GUI.GetNameOfFocusedControl () == "pass-word")
                 {
                     if (appAccount.settings.passWord == "Password") {
                         appAccount.settings.passWord = "";
                     }
                 } else {
                     if (appAccount.settings.passWord == "") {
                         appAccount.settings.passWord = "Password";
                     }
                 }
             }

Can anyone tell me what's going on?? I've also declared the flashing speed of the indicator with:

 GUI.skin.settings.cursorFlashSpeed = 3;