Sorry Oreo, I must share my findings!
In case anyone was worried about my situation I think I’ve figured it out already, basically just put two of the same color donkey in between two fences, really at least one of them should be tamed (further testing needed to prove the relevance of taming in the breeding process) I personally left two blocks of space in between the fences and placed a campfire, maybe it helps who knows. Anyway, meditate and zoom the camera away from the action, no joke well yeah but actually do it it seems to help, and wait to hear the baby donkey sound. Kill the baby until a new color is produced. u have to! There’s a chance that you will get the previous color in the chain, the same color as the parents, or the new color.
If you only have one donkey, it will produce a baby by itself… somehow, but it could be either the previous color in the chain, or the same as the parent.