eclair-cli usage example color formatting not working in different shells

[fjahr]

I have been using the default version (old) of Bash in the latest macOS version and the color formatting in the usage example was not working as intended. I checked and the \e is not supported in the version that ships with macOS currently. However, I switched to zsh (5.7.1) and it was the same case there. Then upgraded Bash via homebrew (5.0.11) and I am still seeing the issue. I have been trying the See example usage line:

$ eclair-core/eclair-cli
==============================
Command line client for eclair
==============================

This tool requires the eclair node's API to be enabled and listening
on <http://localhost:8080>.

Usage
-----
\e[93meclair-cli\e[39m [\e[93mOPTIONS\e[39m]... <\e[93mCOMMAND\e[39m> [--command-param=command-value]...

where OPTIONS can be:
  -p <password>         API's password
  -a <address>          Override the API URL with <address>
  -h                    Show this help
  -s                    Some commands can print a trimmed JSON

and COMMAND is one of:
  getinfo, connect, disconnect, open, close, forceclose, updaterelayfee,
  peers, channels, channel, allnodes, allchannels, allupdates
  findroute, findroutetonode, parseinvoice, payinvoice, sendtonode,
  sendtoroute, getsentinfo, createinvoice, getinvoice, listinvoices,
  listpendinginvoices, getreceivedinfo, audit, networkfees,
  channelstats, usablebalances

Examples
--------
  eclair-cli -a localhost:1234 peers        list the peers of a node hosted on localhost:1234
  eclair-cli close --channelId=006fb...     closes the channel with id 006fb...


Full documentation here: <https://acinq.github.io/eclair>

Using the color formatting in printf it comes out correctly, so there seems to be some kind of escaping issue?

$ printf '\e[93meclair-cli\e[39m [\e[93mOPTIONS\e[39m]... <\e[93mCOMMAND\e[39m> [--command-param=command-value]'
eclair-cli [OPTIONS]... <COMMAND> [--command-param=command-value]