In iOS 7, a navigation bar’s tintColor
affects the color of the back indicator image, button titles, and button images. The barTintColor
property affects the color of the bar itself. So, you can try setting the barTintColor
and check if it solves your issue.
Also, when using the barButtonItem images, the following code is worth a try:
myImage = [myImage imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal];