They are emerald - green during the day while they turn dark green at night .
Male Hylorina sylvatica grow to snout - vent length of 53 -- 56 mm ( 2.1 -- 2.2 in ) and females to 60 -- 66 mm ( 2.4 -- 2.6 in ) .
Male Hylorina sylvatica are emerald - green during the day while Male Hylorina sylvatica turn dark green at night .
Male Hylorina sylvatica grow to snout - vent length of 53 -- 56 mm ( 2.1 -- 2.2 in ) and females to 60 -- 66 mm ( 2.4 -- 2.6 in ) .