Launch Helix with --theme arg

[TableGamesDealer]

I want to be able to open helix with a specified theme as an argument.
hx . --theme material_deep_ocean

I have a workaround that involves a binary that overwrites my config and that's cool,
but I don't feel comfortable invading others user space. I want to be able to use zellij to open panes with helix based on the exit codes of programs. If I had this as an argument I could make workspaces that use themes as a feature of the output.

There is already the ability to target a specific config, but I believe that it is necessary for much more versatile control over themes.

My use case, on cargo test when passing my editor opens with nord, when failing it opens with meloria. I have color framing the output and it's really nice to have.