Suggestion

set {_prefix} to colored prefix of group named "admin"
set {_prefix} to colored {_group}

Why?

Since you have this and this. It will be a pretty neat edition.

Other

Maybe suffix? Don't really care about that.

Agreement

• I have read the guidelines above and affirm I am following them with this suggestion.

Also add group of offline player that is very needed.

The code looks like it already supports offline players

The code looks like it already supports offline players

It's showing as < none > .
that's why offline players don't work
only online players

this? https://docs.skriptlang.org/expressions.html?search=#ExprPrefixSuffix

I think thats what they want except they want to be able to use it on groups as well as players

this? https://docs.skriptlang.org/expressions.html?search=#ExprPrefixSuffix

No, I meant color of groups

I think thats what they want except they want to be able to use it on groups as well as players

Correct.

RE: For the group of offline players

This is probably not related to Skript. Skript only uses Vault's API that permission plugins uses
See if enabling this option helps

https://github.com/LuckPerms/LuckPerms/blob/d74a4dcb7efe61aa366397c5cff7de3aef132aeb/bukkit/src/main/resources/config.yml#L641