hexyl | A command-line hex viewer | Command Line Interface library

I'm trying to render the output of a linux shell command in HTML. For example, systemctl status mysql looks like this in my terminal:

As I understand from Floz'z Misc I was expecting that the underlying character stream would contain control codes. But looking at it in say hexyl (systemctl status mysql | hexyl) I can't see any codes:

Looking near the bottom on lines 080 and 090 where the text "Active: failed" is displayed, I was hoping to find some control sequences to change the color to red. While not necessarily ascii, I used some ascii tables to help me:

• looking at the second lot of 8 characters on line 090 where the letters ive: fa are displayed, I find:
• 69 = i
• 76 = v
• 65 = e
• 3a = :
• 20 = space
• 66 = f
• 61 = a
• 69 = i

There are no bytes for control sequences.

I wondered if hexyl is choosing not to display them so I wrote a Java program which outputs the raw bytes after executing the process as a bash script and the results are the same - no control sequences.

The Java is roughly: