Don, I am sympathetic to your skepticism regarding personal accounts. From the time when we were children, we were warned by our parents about the devil appearing as an angel of light. One testing we learned to apply is that the adversary cannot stand the blood of Jesus. So, that would be in my arsenal in dealing with any similar situation.
Then in my college years, I heard a minister explain that we have every right to question anyone's personal experience. The Bible is our standard of authority, and people can be fooled. So, we do not stand on any one person's experience, or even human interpretation of Scripture. We, like the Bereans, search the scriptures to see if these things be so.
One of the related video interviews on youtube (nearly a half hour long, so I will spare you the link, but you can find it, there, if interested) included some compelling comments, including passages from the Bible: Matthew 5:8, 18:10, 18:16, and Joel 2:28.
This was the jist of one question: Does the testimony draw Christians away from the Lord Jesus...or does it draw many to respond to His loving voice?
As for the witnesses, interestingly Colton's description of Jesus was matched by another eye witness, also a four-year-old child growing up in an atheist home (so she had never heard anything like what Colton had). She has been gifted to put her dreams/visions into paintings and poems, and the result led her parents to Jesus, too.
I like the words of Gamaliel: "... let them alone, for if this plan or this undertaking is of man, it will fail; but if it is of God, you will not be able to overthrow them. You might even be found opposing God!” Acts 5:38-39 ESV