I'm a new Garmin 230 user and i wrote a simply watchface : DomiWatch
A watch with battery life in % (3 colors as % decrease), date, time, move+distance+kcal progress with user settings
https://apps.garmin.com/en-US/apps/1b5d45e0-573d-412e-befc-25bb084a460d

Please feel free to report/suggest...
Thanks
Last version :
v3.17 : fix (i hope :-)) problem about steps color back to red
v3.16 : add Fenix 3 HR support + fix problem with first move bar alert (appear after 1 hour with no move)
v3.15 : change color for steps red to white (or black for white background) to be more visible
v3.14 : fix range color battery problems