How do you highlight orders when they are imported?
You can use the Advanced Order Processor to set the colour of certain orders as they are imported, (using Automation).
If you want to use this approach when manually importing orders, simply click on the Close and Process Orders button and then click on the Advanced button (as the imported orders will currently be selected).
To use Automation, tick the 'Order Process Checker' option for the task. This will run the Advanced Rules on any new orders that are imported.