Create an unbound text element named "Status"
Put something like this in the program section, OnFormEnter.

If @Date <= DateDueOut then Status ="On Schedule"
Else {
If @Date>DateDueOut then Status = "OverDue"

----------------------------------
But what do you do after delivery?  Will always show overdue.

Suggest adding another date element, "DateShipped".  Make the DueDate calculated automatically from DateReceived, Read Only, and change @Date in the the program above to DateShipped.

Will look like this:
If DateShipped <= DateDueOut then Status = "On Schedule"
If @IsBlank(DateShipped) and DateDueOut<@Date, then Status = "Overdue"
If DateShipped > DateDueOut then Status = "Late Delivery"

(Sample code here is untested)
-----------------
This will also allow you to get statistics on how many shipments were on time, days late, days after receipt, etc.  Avg number of days late, etc. can be calculated.

YES, with Version 2.  See ATTRIBUTE command, Programming Guide, p 169

OnFormEntry:

//Overdue
If DueDate<@Date then {
       Attribute(DueDate,ATTR_ID_TEXT_RGB_COLOR,"255,0,0")
       }

//On Time
If DueDate >=@Date then {
      Attribute(DueDate,ATTR_ID_TEXT_RGB_COLOR,"0.200.255") }
      }

ForceRedraw()