Request option to make foreground display white text or change Video background

This Sunday we are once again allowed to have a small number of people attend.  Meaning we will need to have a professional stream and no green screen elements on our front projector.

I am having an issue getting things just right.  I have a two computer setup, A stream PC and Proclaim PC.

I have setup the OBS on my proclaim PC to automatically change between the Main Slide Output and the Foreground Output, depending on if we are displaying songs / sermon slides / video.

Here is my issue:

With the Transparent Background set to green, I have a green background on my FOH projector when Videos play and don't fit the entire screen.  (Namely because we have people recording Bible readings on their Phone). So having a bright green border around videos on the front projector is not a good solution.

I then changed the Transparent background to Black.  This fixed most of the issues.  The background to the videos was okay as black.

I changed the filter settings in the OBS screen capture so that foreground lyrics would be white (i.e, Colour Key - colour adjustment).  Which worked well for the stream.  The Issue this creates, however, is that If I choose a slide template that sets the font colour to black, the text on the black foreground display disappear, and hence disappear from OBS.

So it would seem beneficial to either:

1) Have the option change the background of videos to Black; or

2) Have the option to set the foreground text colour to always be white.

I could send a feed from OBS to the front projector that fixes all this, but would rather not make things confusing for my future operators.

Any other thoughts would be appreciated.