Remove the knobs and cooktop grates by pulling them straight off the cooktop.
Spray the entire cooktop surface with an all-purpose cleaner that will remove any grease and grime on the surface. Wipe the cooktop with a paper towel and let the area air dry for several minutes.
Place a number stencil over the area on the cooktop where you would like to place the numbers.
Dab the stove paint directly over the stencil with a paintbrush. Apply a thick layer of paint, as it is difficult to apply two coats evenly. Lift the stencil off and let the paint dry to the touch. Repeat until you’ve replaced all of the numbers.