Edit the existing design without altering its overall structure. Transform the left-half of the heart-shaped shield to a black charge. Change the right-half to a dark-purple charge, maintaining the original shapes. Alter the color of the vines to a rich gold hue. Change the coronet at the top to a golden color as well. Lastly, ensure the ribbon below retains the motto "Dulcius Ex Asperis" in a clear and visible font