I'm playing with my new blink(1), and trying to hook it's command line interface into some of my programs, but the docs are a little limited and I'm struggling to figure out how to run even some seemingly simple commands.

In particular, the CLI docs say:

Usage: 
  blink1-tool <cmd> [options]
where <cmd> is one of:
  ....
  --blink <numtimes>          Blink on/off
  ....

So I try to run blink1-tool --blink 5 and it outputs blink 5 times rgb:0,0,0: and doesn't light up.

How do I use the --blink command?