With the redesign of iOS 7, the color mode to differentiate when a switch is set to on or off has changed. The color of a switch that's off is white, and the color for a switch that's on is green.
Previous versions of iOS also had an On or Off indicator in view when a switch was moved to one side or another. Alas, those labels are gone in iOS 7, but you can add a different type of label should you prefer it. For some, be it due to disabilities or other personal preference, the color-only … Read more