In order to get a copy of a birth certificate in colorado for someone other then yourself you are required to have a copy of there death certificate. In order to obtain a death certificate you have to be able to prove to colorado vital statistics on how you are related to them. example for my great grandfather birth certificate. i had to bring in copies of mine, mothers and rand mothers to prove i was related to get a death certificate and the submit it plus the prior items to get his birth. hope this helps to understand the loops you will have to jump thru