color coding orders/deliveries

I think a nice feature will be to color code orders for a better view in "delivery against sales orders".
Here's the idea:
A customer call and say i want this product ship overnight. So when John enter the sales order he can select "urgent" or "red" in the sales order entry page.
For company that also customize and manufacture products on sales order, when you look at "delivery against sales orders" page if there are different colors it's easier to identify which orders are straight inventory sales and they can ship right away and the once that are customize/manufacturing orders.
This way Mike in the warehouse don't need to spend all that time with the inside office to figure out what need to happen with each order.

So, in sales order entry page by default there is no color selection for orders, but if you want to select colors it can be something like: yellow for manufacturing sales, green for straight inventory sales, red for urgent etc...

This can also apply for companies that have 2 or more shipping departments/locations. Color coding for department/location will tell which one have to handle the order...