I change my Garmin watchface to be something different during nights/weekends, as a reminder that I'm off the clock. I hope that Eric offers a way to automate this in PebbleOS!
Indeed, and thanks for flagging the 'disable wrist backlight trigger' in sleep mode as well. I like that Garmin does this. It's nice to use Pebble as a dim light when stumbling around in the dark, but it's easy enough to press a button to turn on.