In 1974, Tom Weidner purchased a patternless Burmese python from Western Zoological Supply in West Covina, California. Tom produced hets from this animal 10 years later in 1984. Offspring from that clutch went on to produce the first visuals in 1987.
These patternless burms are commonly referred to as "green" burms because as adults they have a dark olive green color. Hatchlings are a lighter khaki color. The arrow pattern on the top of the head and teardrops behind the eyes are sometimes reduced or lighter in color.