It would be hard but can you add custom messages for your command usage in messages.properties? As it's not nice having a fully white message displayed.

You can actually edit the descriptions found in the plugin.yml, here's an example:

  tpa:
    description: §6Sends a teleport request to a target player.
    usage: §c/<command> <player>

This will make the help message appear colored ingame, with §6 representing gold and §c representing light red.

Thank you!
Working just fine.