I shot some stuff with the Vlog and some of the footage changes color temperature throughout, like back and forth every other frame. Is it because of the fluorescent ceiling light? If so how do I fix that? It looks like it goes from greenish to reddish..

whats your shutterspeed?

Super high, like 200, but I have never seen this before. The only thing I changed was using the V-Log.

If you're in US use 60 under flo lights.

Would that create the color "flickering" between "warm" and cool"?

If it was because of a wrong shutterspeed you would notice this as well with other presets, I would just shoot the same scene and cycle through different presets and see what happens.