Yes and no
Colombian boas (Boa Constrictor Imperator) are commonly referred to as red tail boas in the pet industry. They are not "true" red tails though.
The true red tails are the (Boa Constrictor Constrictor) that display a lot more red in thier tails as adults. They also get a lot larger than their colombian cousins. Some examples of true redtails are Suriname and Guyana boas.