It would be very helpful to have the ability to highlight either a transaction or a group of transactions by various colors. This could be used to highlight the end of a quarter, a transaction in need of review, and could be used to group transactions based on user preference ie green transactions are credit payments and red ones are credit charges. Basically, they could be used to easily make certain transactions stand out on the register, making it easier to spot those transactions. Making transactions easier to spot, makes things more productive and less error prone.