Dead link https://github.com/MtnViewJohn/context-free/wiki/Targeting-a-Color

[keller91711]

https://github.com/MtnViewJohn/context-free/wiki/Targeting-a-Color
does not exist.

[MtnViewJohn]

We used to host the documentation wiki as a Mediawiki. But we migrated to the Github wiki in 2012 or so. That page was forgotten in the migration. I was able to find the old content on the Internet Wayback Machine: here. The information on that page is obsolete as color targeting works differently now. But a tutorial would be useful. I will try to rewrite the old tutorial.