systemui: Use the same color for circle battery than clock color

Patchset 3: Fix code derp

Change-Id: Iaa7b778b705468996079fe600821eeb94a6ecb28
Signed-off-by: Jorge Ruesga <jorge@ruesga.com>

Conflicts:
	packages/SystemUI/src/com/android/systemui/BatteryMeterView.java