Use this guide for an already published site. In your repository’s Code tab,
open _config.yml and click the pencil. Edit existing entries and preserve
unrelated settings; do not add a second chulapa-skin section.
Select the style
Choose a style from the highlighting previews. Change
highlight under your existing chulapa-skin section:
chulapa-skin:
highlight: zenburn
Keep your skin and other settings. default is the default highlighting style.
The preview selector changes only the demo, not your site’s configuration.
Publish and check
Save with Commit changes on your publishing branch. Wait for the latest run
in Actions to succeed, then open your website from Settings > Pages.
Open a page containing a fenced code block with a language name, such as
ruby. Check the code text, background and contrast, including on a narrow
screen. A highlighting style controls code appearance; it does not change the
font or colors of ordinary article text.
For local preview, restart Jekyll after changing _config.yml: these settings
are compiled into CSS during the build. If changes are missing, use
the publishing checks.
For the setting, see the highlighting reference.