There is one available but its showing 10s power and there is no way to edit it aside from putting it your FTP. (Not sure why it cannot read the current FTP setting you have in your device..) I could not find one with just a 3s power with background colors as an indicator per zone you are in.
z1-gray
z2- blue
z3- green
z4- yellow
z5 - orange
z6- red
z7- purple?
is it easy enough to create one myself? With a few tutorials of course.