Colours changing without sense…

Hi,

Colours of my homepage have all changed without any warning.
It doesn’t make sense…

In WP admin screen, colours are still the same in the page content.
But now the homepage is just a crazy mix of gray text (which I never use) and white and blue background…

I’ve try to update the page but it does nothing.

I have to reopen each and every component of the page to reset the color I want.

THIS IS THE SECOND TIME IT HAPPENS

Thk you for your support.