I believe this is a feature yet to be included in the driver but the current effect and palette states don't update if changed from WLED.
I'm working on a rule that will log the current switch state, effect, palette and brightness as variables, run a certain WLED preset and then restore the previous effect, palette and brightness and restore the switch state.
However, it seems that the state in Hubitat for effect and palette only seem to update if the change is pushed from hubitat. Even with the refresh interval set to 30 seconds, the effect and palette states don't update if a change is made through the WLED interface which makes capturing the current effect and palette unattainable.