Is there a native dark mode option?

[scottchiefbaker]

ChatGPT directed me to GeSHi for syntax highlighting some Perl script. Seems to work great out of the box with a minimal configuration:

// Initialize GeSHi
$geshi = new GeSHi($code, 'perl');

// Configure GeSHi
$geshi->enable_line_numbers(GESHI_NORMAL_LINE_NUMBERS);
$geshi->set_header_type(GESHI_HEADER_DIV);

print $geshi->parse_code();

It's 2025 though, and it'd be nice if there was a "dark mode" out-of-the-box. Doing some Google and documentation searches I'm not seeing an obvious answer for this. Surely someone out there has already done this, and it just needs to be documented?