Customizing the Title Text of Navigation Bar:

UITextAttributeFont – Key to the font
UITextAttributeTextColor – Key to the text color
UITextAttributeTextShadowColor – Key to the text shadow color
UITextAttributeTextShadowOffset – Key to the offset used for the text shadow

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    [[UINavigationBar appearance] setTitleTextAttributes: [NSDictionary dictionaryWithObjectsAndKeys:
                                                           [UIColor colorWithRed:245.0/255.0 green:245.0/255.0 blue:245.0/255.0 alpha:1.0], UITextAttributeTextColor,
                                                           [UIColor colorWithRed:0.0 green:0.0 blue:0.0 alpha:0.8],UITextAttributeTextShadowColor,
                                                           [NSValue valueWithUIOffset:UIOffsetMake(0, 1)],
                                                           UITextAttributeTextShadowOffset,
                                                           [UIFont fontWithName:@"HelveticaNeue-CondensedBlack" size:21.0], UITextAttributeFont, nil]];