We use EW relatively simply in our liturgy- to project the words to songs.  

Our congregants have said it is much easier to read black on white than the reverse. I have not been able to figure out how to make this simple change.  Currently I have to make a PP presentation and upload it to a schedule which defeats the purpose. 

I appreciate any help. 

Thank you 

It is quite easy to do this. You can create a THEME with a white background and black text that you apply to the songs, presentations, scriptures, etc. You can also use Inspector in a specific song to do this.

https://support.easyworship.com/support/solutions/articles/24000020399-inspector

https://support.easyworship.com/support/solutions/articles/24000020403-about-themes

https://support.easyworship.com/support/solutions/articles/24000020893-creating-a-theme

I would also suggest going to ChurchMotionGraphics dot com and download their free CMG Sans fonts. They are specifically designed for legibility on screens making them considerably easier to read. 

https://www.churchmotiongraphics.com/cmg-sans/