When looking to update existing cabinet door fronts without major costs, keep in mind that glossy black and glossy white paint instantly modernize almost any style door front, resulting in a much newer look. In order to properly refinish old cabinet door fronts, first, remove them from the casing, marking the back of each door front and the inside of the cabinet with painter's tape marked with coordinating numbers. Next, remove the existing finish with fine-grit sandpaper and wipe away dust with a damp cloth. Add an even coat of primer to the front and back of each door front as well as the fascia of the cabinet casing. Lastly, use a professional-grade, two- or three-inch angled brush to apply two coats of a high-gloss latex paint, as well as a clear coat of polyurethane. Keep the space well-ventilated for 24 to 48 hours to allow fumes to subside.