Very pretty pick up!
Just to help with this - Nicaraguan is the locality, your boa is a hypo (visual hypo).
He also carries the Blood gene (het blood) which is a recessive trait, so one of the parents was a visual blood boa.
(blood boa's look like this - http://www.cuttingedgeherp.com/image...BloodBoa08.jpg )
He has a 66% chance of also carrying the recessive trait T (Tyrosinase) which is a type of albino that looks like a caramel albino. Since your guy is only 66% possibly het, that means both parents were het (carried) the trait so it's a 66% chance they passed it on to the offspring. No way to tell unless you breed/prove him out.
Usually it's specficied T+ or T- as there are different types. In boas, most likely T+, basic derscription of the trait - http://vpi.com/mailbag/2006/11/what_is_t_and_t_mean
a T+ nic looks like this - http://www.snake-planet.eu/wp-conten...2010/09/21.jpg