Test out trac as highlighter style

See #425

config.toml

@@ -16,18 +16,18 @@ pluralizeListTitles = false
 # We do redirects via Netlify's _redirects file, generated by Hugo (see "outputs" below).
 disableAliases = true
 
-
 # Highlighting config (Pygments)
 # It is (currently) not in use, but you can do ```go in a content file if you want to.
 pygmentsCodeFences = true
 
 pygmentsOptions = ""
 # Use the Chroma stylesheet
-pygmentsUseClasses = true
+# TODO(bep) build new CSS when we have picked a new style.
+pygmentsUseClasses = false
 pygmentsUseClassic = false
 
 # See https://help.farbox.com/pygments.html
-pygmentsStyle = "friendly"
+pygmentsStyle = "trac"
 
 [outputs]
 home = [ "HTML", "RSS", "REDIR", "HEADERS" ]