If the judgment states unequivocally that the child is not yours, then the mother cannot get child support under any circumstances, without first getting the Colorado court to vacate the judgment. Colorado law permits a child support judgment to be set aside on grounds of fraud or mistake. See Green v. Green, 93 P.3d 614 (Colo.App. 05/06/2004).
However, even if the judgment is set aside by the court, the mother may be "estopped" (barred) from using the change in her testimony to enforce a retroactive child support award, assuming that the court is convinced that the prior orders caused you to change your life differently than you otherwise would have. Obviously, this is the case, because you expended money in ways that you would have been unable to do, were you subjected to a child support award, as well as the right to custody or visitation with the child.
BotXXXXX XXXXXne, you could be subjected to 14 years of retroactive child support -- but I think it extremely unlikely, in view of the facts, because of the oppressive nature of the ruling and the deprivation of your parenting rights in reliance upon the court's prior judgment.
Hope this helps.
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