When I add a Code Block Macro and set the language to "Diff", I expect the syntax highlighting to make lines that begin with '-' red, and lines that begin with '+' green. Instead, lines that begin with '-' are green and lines that begin with '+' are dark blue.
Example (I tried a few variants just to see if it would make a difference):
Is there a way to fix this (or a workaround) to get the correct formatting, which should be:
