How to change color of letters of sectionIndexTitlesForTableView?

Go to the IB and change the text COLOR to white, Works for me

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And in Swift, you can also change Programatically by:

self.my_tableView.sectionIndexColor = UIColor.greenColor()

Following code is a straight solution. api is available from iOS 6

 [tableView setSectionIndexColor:[UIColor greenColor]];