switch power led to off when Raspberry Pi 5 is off?

I'd like the power led to remain off when the system is powered off. Currently, it's (a quite bright) red when the system is off.

I tried adding the following lines to the config.txt file:

dtparam=pwr_led_trigger=default-on
dtparam=pwr_led_activelow=off

but that did not seem to make a difference.

What am I missing?

Thanks!