Modern pages theming question (black background)

Hello,

 

I have a problem with theming in SharePoint modern pages. My customer wants me to set the background to pitch black (RGB000000). I can control most elements by using the theme generator och then import the theme using "Add-APOTheme" powershell command. However, I can't find a way to set the text colour on search result page. The "search hits"-highlighted words are black which makes them invisible. All other text follows the theme.

 

Do someone understand what I mean? :-)

 

/Magnus