Paint each pot white and let dry.
When the white paint is dry, place masking tape over the drainage hole.
Apply some paint to the bottom edge of the pot and let it drip down the sides.
Let the paint drips dry completely.
Paint the saucers and let dry.
Once the paint on the flower pot and saucer is dry, spray with acrylic sealer and let that dry.
Remove masking tape.
Plant the flowers.