doc: fix colorW default escape
Fix man makefile file

- Name productions after files and make knows when things are required
Maintain cached sudo credentials in background

- Ask for sudo up front
- Refresh cached credentials every 60s, as long as we're running

Reference[1], License[2].

1: https://github.com/mtoader/.files/blob/3c4092996edf4fa3dbc3fe081191a80e04e577c1/.osx#L7
2: https://github.com/mtoader/.files/blob/3c4092996edf4fa3dbc3fe081191a80e04e577c1/LICENSE
Document eager_sudo