Can you attach a screenshot? *https://support.mozilla.org/en-US/kb/how-do-i-create-screenshot-my-problem *use a compressed image type like PNG or JPG to save the screenshot Are you possibly using a High Contrast mode? Make sure you haven't enabled High Contrast mode in the OS settings. Make sure you allow pages to choose their own colors as this affects background images. *Settings -> General -> Language and Appearance -> Colors -> Manage Colors<br>"Override the colors specified by the page with your selections above" Try "Never" if the default "Only with High Contrast themes" isn't working. *https://support.mozilla.org/en-US/kb/disable-high-contrast-mode-firefox