Yes! That's it, didn't realised grunt was setup in a way to pick-up custom themes. It's working like a charm!
Thanks a lot @PitaJ !
Newbe question here.
There are reload and restart in nodebb admin page.
I confuse between reload vs restart.
Is reload same with press F5 on web browser (make request to server to update the data model)
And restart means restart nodebb on the server ?
Reload is essentially a "soft restart." It reloads the templates of plugins and recompiles the CSS, but doesn't actually shut down the server. The restarting shuts down the process and starts it back up.