Privacy of the page
If you want to label the page as private, just add {{private}} at the top of the page.
You can also color in the infobox based on its family color by using "familycolor" + the name of the superfamily your language its in, so for your case it'd probably be something like:
| familycolor = Indo-European
If you would like any more help, feel free to ask on my task page. Jukethatbox (talk)