Since you’re using HA, I’d recommend adding the Zwave JS script from here for pixel effects.
I would also recommend setting up this Blueprint to handle a color change fix as well.
Once you’ve got both of those, if you’re looking to change the default color when it turns on, you’re looking for parameter 9 I believe.
If you just want to change the color once it’s on, you should be able to click the icon from your dashboard and you’ll get something like this -
