I don't have any experience with this, but here's my take:
From your post I get that you were hoping for full immediate acceptance and embrace of all your values/feelings. I think that's a bit much to expect from people, especially if you know they have opposing values.
Your parents need time to really digest exactly what you told them means for your and their lives. You can help them by providing useful information and being open to conversation. Also be prepared to agree to disagree on things.
Your talk seems like a good start and from what you told, there are signs that your parents are open to what you're saying, so I'm hopeful it'll all work out. You just gotta give it time and effort.
Good luck!