Ah, that works perfectly for me, @SpiritualSocket!
@soises, if you were to post Hazel's black text by also adding a formatting tag to set the background colour to white, then it would, for me at least, show up in whichever theme you were using.
i.e. like this (just quoting this from @SpiritualSocket)
Testing black text
Maybe even using something like
Testing black text
so it also highlighted in both themes?
Here's an image of the markup I used here: