Syntax highlighting contrast is too low

As of March 25th, 2025, the colors that are applied to code blocks via syntax highlighting have had their saturation significantly reduced, making it very difficult to discern differences in similar colors. 

Specifically, red and orange are indistinguishable from each other, as are blue and purple. I have no colorblindness personally, but I imagine these are *significantly* worse for people who do.

Attached are two before and after examples from today's update.