Hmmm... slightly purple... do you mean the 5th one in the video, the one after the green one? None of them look that purple to me... Or do you mean the one near the end with the Stork, Crane or Herron? (sorry, I've kind of let my Ornithology slip a bit)
The effect I like is the kind you see in high tech special ops flicks, when the soldier looks thru his superspy goggles we see his POV which is framed like binocs, but there are all kinds of little colored numbers & things moving around the edges, range finder, temperature, wind speed, etc, even with little rotating bezel rings & gizmos fluctuating. Of course we know it's all faked, but it looks awesome.
Or another great one is as in Terminator, when the system scans the target & a tiny PIP pops up with an identifier in red for hostile, or green for friendly.
Perhaps, since your lovely generous Thanksgiving gift was so well received here.... a super deluxe spec ops version for Christmas? If we've been good?