Yes they can be but in stages. The doors must be removed first along with the hardware.. Carefully tape over the the varnished edging if you wish to keep that part. All sides must be sanded; front back & edges.Use a certified Melamine Paint specially made for cabinetry.. Paint the fronts & 3 edges first; allow to dry overnight and then paint the back and last edge and let dry overnight. Repeat this for a second coat. Re-attach the hardware and tweak it after installing the cabinet doors.