Place frames of capped brood in an incubator set at 33°C and 55% relative humidity.
After 24 hours, brush newly emerged bees into container lined with Vaseline.
Carefully brush a dot of enamel paint onto the center of each thorax.
Note: Pour only a dime-sized amount of paint, the paint dries quickly--making the process more difficult.
Store bees in incubator until release.