The court may order reasonable fees of experts and the child's guardian ad litem, and other costs of the action, including blood or genetic test costs, to be paid by the parties in proportions and at times determined by the court. The court may order that all or a portion of a party's reasonable attorney's fees be paid by another party, except that an award of attorney's fees assessed against the state or any of its agencies or representatives shall be under RCW 4.84.185.