To get started with a theme, simply do
julia> using JuDoc julia> newsite("NameOfSite", template="basic")
replacing basic by the name of the template of your choice.
Remember that these themes are provided as a way to get started, most likely you will need to tweak the template a little bit to suit your taste. However, if you spot a problem with a template or if you would like to suggest improvements (or even a new template), please open an issue on the JuDocTemplates repo.