Request: darken the background of code blocks

My eyes can barely differentiate #f8f8f8 from #ffffff, so I can’t tell the difference between code and commentary! Please can we get code blocks from backticks and triple-backticks a more visible style to differentiate from normal text?? As an example, I can see #f0f0f0 fine, but that’s the lightest that I can tell the difference between it and white.