Sorry guys. I should have provided more details. Also thanks for the quick responses! I've posted for help about this and other things on the XDA forums and most of my posts go completely ignored, so I truly appreciate the acknowledgement!
Yes, my device is rooted and has the Xposed framework. The device is an SM-G930v running Android 6.0.1 (MM).
I found a video on youtube showing the normal bootup sequence for this device in case you want to see it in action:
(first 20 seconds, and this isn't my video or phone, but you get the idea)
It's that bright white background that I really want to get rid of. It's particularly obnoxious when I'm in a dark room, and even worse, if I'm driving at night and the phone is mounted on the dash and i need to reboot it for some reason and inevitably forget what's about to happen and then I suddenly get a bright white light in my face. Additionally, if I'm away from a charging source and need to reboot, I feel like that bright white screen, even if only on for a short while, is still several seconds of extra battery drain.
Also it's just ugly.
Clearly something is loading during that time. I think the "official" boot animation for the device is the "SAMSUNG" logo right before it, especially seeing as other carriers won't have the Verizon screen... but at any rate, there must be some way to remove/change it... i hope.
Any ideas?