On Inkboard device battery indicator

Using the indicator already installed on the Inkboard, have light color that can indicate the battery charge status. Even if it is as simple as showing it is charging with a red light and switches to green once fully charged. It wouldn't need to be a persistent light, just when the charger is plugged into the board, so we don't have to look at our phones to see if 1. it is even charging, 2. how long until it is charged. Having the indicator on the Inkboard would be one more step to removing the distraction of the phone.