Some advertisement photos show black lettering on a white background for the digital watch face. However, I don't see how to change to this in Settings. The only Watch Face choices are digital and analog. Is this a setting that didn't make it to production?
When an activity is started the Forerunner 35 will display a white screen with black font. The watch face is an available screen that can be displayed during and activity, but there is not an option to change the watch face to white background with black font when the device is in low power mode.