Simply
fleck tan acrylic paint (thinned with a bit
of water) on undyed farm eggs using a
small paintbrush, then when dry, handwrite the letters with a
gold paint pen.
He'd rather focus on the apple he produces from his refrigerator:
small, by modern standards, and marred by the occasional bruise or worm hole, but fragrant,
flecked with red and
gold, and remarkably crisp and full
of flavor..