Sales: Use of bold, italics or colour when entering a sale

I WOULD LIKE TO KNOW IF IT POSSIBLE TO USE BOLD, ITALIC OR COLOUR ON CERTAIN ENTRIES ON A SERVICE INVOICE?

I DO NOT WANT TO CHANGE MY CUSTOMISED FORM, BECAUSE IT DOES NOT APPLY TO EVERY INVOICE I ENTER AND THAT WOULD JUST BE MORE WORK!!

IT WOULD BE NICE IF THERE WAS SOME KIND OF TOOLBAR WHICH INCLUDED THESE OPTIONS INSTEAD OF HAVING TO CUSTOMISE FORMS!

ANY IDEAS???

"CAN YOU USE BOLD, ITALIC OR COLOUR WHEN ENTERING SERVICE INVOICE"