Ok, so rather than drag out this thread with a lot of back and forth, D34DC3N73R and I PM'd and he was gracious enough to spend about 2 hours with me helping to get this working as I wanted. For those of you who've found this thread, here is what we ended up doing. He wrote a script for my (in this thread) that toggle between the Ambilight (V4L) and just white lights (on is the screen match off is the white lights). This also created a switch within HA that I control via and automation. We found out that the Home Assistant/SmartThings native integration keeps the switches in sync between the 2 systems already. So I created a virtual device in ST's that shows up in HA because of that integration then i use an automation that triggers the Ambilight switch based on the virtual switch state. I did it this way because i wanted to assign the Home Control buttons on the Harmony Elite to allow me to toggle between Ambilight and White lights as well as turn those lights on and off with an activity. I use 2 virtual switches to do this. One simply turns on and off with an activity (this is setup within the Harmony activity and uses ST). This give me the lights on/lights off control. Next i assigned the virtual switch to the Home Control buttons on the remote. After that I set up an automation that is triggered by those 2 virtual switch and tells HA to turn on and off the Hyperion lights and toggle between the 2 desired effects. Hyperion has a native integration with HA but not ST's so this is why I had to do it this way.
Hope this helps someone in the future. A HUGE thank you to D34DC3N73R for his help on this for not only Hyperion but also HA. If anyone finds this is needs help I am happy to try to pay it forward and answer any question about this.