Alternative icon. Rectangle with blue, green, yellow, red fill. Time Remaining/percentage inside rectangle.
Could you add an option to display an alternative applet icon? The alternative icon could be a rectangle. The rectangle's fill color could change according to the battery status. Blue fill = AC, Green fill = full, Yellow fill = low, Red fill = critical. The time remaining could be displayed inside the rectangle. There could be an option to switch between time remaining and battery percentage.