Set bolt and plus colors together

Also test to make sure the colors stay the same.

Test: runtest -x frameworks/base/packages/SettingsLib/tests/integ/src/com/android/settingslib/graph/BatteryMeterDrawableBaseTest.java
Bug: 62668861
Change-Id: I7d01fd41aeedcb182dc05da8d7b0501a6b5b8539
2 files changed