Sorry don't believe you.
I totally believe her.
I wont go into any story..but I had a very intense long encounter about twelve years ago, OP.
Some of your details sound similar to my experience.
I
did the MUFON thing too. I will NEVER
do the MUFON thing again.
Can you point out the similarities?
The morphing colors and the way you described them spectrally..but mine was very close to me and I saw way more of the craft itself.
Also the "search light/headlight look and the way the craft moved.
I dealt with the scene for about 1 hour 40 minutes...so I got to see wild variations in behavior and appearance.
what was the shape of the craft?
i'm not saying anymore after this..
At first it was a ball of white hot fire and large chunks/bubble of the "fire" calved off and fell like a soap bubble would, to the ground and would "pop" and disappear.
Then the white ball of sparking fire darkened and became a warbling ball of dark rainbow colors with the surface of the plasma undulating and rotating clockwise if you were standing below it. At one point the plasma became transparent enough that I could see a "triangular" hard craft inside the plasma bubble. It was confusing as hell.
There is more but I need to stop here.