Dark color sections becoming white

Hello-

My website is at valparker.com. I have color sections at the top of each page for the hero image.

Once a week, randomly, the color sections go white, making the text unreadable. I have tried clearing caches, setting a minimum height to these sections, etc. Nothing seems to keep it consistently correct and occasionally the colors sections will return to their deep gray color with me just logging in and clicking to edit the page.

I’ve included a screenshot link of what the pages look like when the color section is no longer dark.