I am not. I’m just one of several folks here with the ability to play with site settings, and an interest in doing so.
@hhlp is another such person, and has done more work on the themes than I have. I just changed the font settings. But in this case, we’re using lightly modified versions of the stock “Light” and “Dark” themes from Discourse, and getting them to tweak this generally by request at https://meta.discourse.org/ is probably the way to make the biggest improvement.
Ah, I see what you mean. The font is different, though… on my system at least, Open Sans for the normal text and (monospaced) Source Code Pro for the preformatted block. They’re admittedly similar, but not identical. There isn’t a setting for the monospaced font that I can see — it’d need to be a CSS tweak.
I tried the green (as well as “Freedom Purple”) and the contrast is too low against a light background. This could maybe work with dark grey or even black, though. That kind of gives a retro terminal look, which isn’t necessarily bad. @hhlp what do you think?