Colorado does not automatically award custody of the minor children to the mother, and the court does not consider fault. The court considers what is in the best interests of the child. Colorado divorce law allows for two different kinds of child custody: primary residential and legal custody. Primary residential custody means the parent the child lives with; legal custody means the rights that a parent has to make important decision for the child. Usually, the judge will give joint legal custody to both parents and primary residential custody to only one of the parents.