Re: California vs. Colorado
You file, hire an attorney and abide by the laws of the state of Colorado. And there is no such thing as half custody. You can't cut a child in half. Are you speaking of joint custody? Hopefully you're speaking of joint legal custody because joint physical custody is never going to happen when you guys live in two different states.
If you wanted babies all to yourself, you should have created them by yourself. Until you do that, children have the right to BOTH parents, especially since you found them suitable to procreate with.