If you’ve been fiddling and tinkering with Android 5.0 Lollipop, you might have inadvertently added two toggles in the quick settings toggle menu – Invert Colors and Wi-Fi Hotspot. This happens by simply trying out these features and unfortunately, once you enable them, you can’t remove the respective toggles from the quick settings drawer.
Not conventionally, that is – user discovered that jumping back or forth in time and changing the date of your phone usually solves the problem.