Color changes on title bar

I have a gallery set up and when I select the Justified layout the title bar is gray, when I change the layout to tiles, the title bar is Red. I like the tile layout better, but want the title bar to be grey or blue anything but RED. How do I change this color for the tile layout?
Link to page with Justified layout https://rmgreatdane.org/2020-adoptions/
Link to sample of Tile layout https://rmgreatdane.org/2021-adoptions/

Thanks!

The page I need help with: [log in to see the link]