- (UIImage *)tintWithColor:(UIColor *)tintColor;
{
    UIGraphicsBeginImageContextWithOptions(self.size, NO,[UIScreen mainScreen].scale);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
    
    //.s. original pic
    [self drawInRect:rect blendMode:kCGBlendModeNormal alpha:1.0f];
    
    CGContextSetBlendMode(context, kCGBlendModeOverlay);
    [tintColor setFill];
    CGContextFillRect(context, rect);
    
    //.s. mask by alpha values of original image
    [self drawInRect:rect blendMode:kCGBlendModeDestinationIn alpha:1.0f];
    
    UIImage *tintedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return tintedImage;
}

Podéis hacer una Category para la clase UIImage. De esta manera al hacer el impor del archivo lo puedes utilizar modo:

UIImage * img = [[UIImage imageNamed:@"miimagen.png"] tintedImageUsingColor:[UIColor redColor]];

Pasos:
- Crear un nuevo archivo del tipo Clase : NSObject
- Nombre: UIImage+TintColor.

UIImage+TintColor.h

//
//  UIImage+TintColor.h
//  blovery
//
//  Created by Sergio Cano Moreno on 11/04/12.
//  Copyright (c) 2012 Ninecols. All rights reserved.
//

#import <Foundation/Foundation.h>

@interface UIImage(TintColor)

+ (UIImage *)imageNamed:(NSString *)name tintWithColor:(UIColor *)color;

- (UIImage *)tintWithColor:(UIColor *)tintColor;

@end

UIImage+TintColo

//
//  UIImage+TintColor.m
//  blovery
//
//  Created by Sergio Cano Moreno on 11/04/12.
//  Copyright (c) 2012 Ninecols. All rights reserved.
//

#import "UIImage+TintColor.h"

@implementation UIImage(TintColor)

+ (UIImage *)imageNamed:(NSString *)name tintWithColor:(UIColor *)color {
    UIImage *img = [UIImage imageNamed:name];
    return [img tintWithColor:color];
    
}

- (UIImage *)tintWithColor:(UIColor *)tintColor;
{
    UIGraphicsBeginImageContextWithOptions(self.size, NO,[UIScreen mainScreen].scale);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
    
    //.s. original pic
    [self drawInRect:rect blendMode:kCGBlendModeNormal alpha:1.0f];
    
    CGContextSetBlendMode(context, kCGBlendModeOverlay);
    [tintColor setFill];
    CGContextFillRect(context, rect);
    
    //.s. mask by alpha values of original image
    [self drawInRect:rect blendMode:kCGBlendModeDestinationIn alpha:1.0f];
    
    UIImage *tintedImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return tintedImage;
}
@end

The Arctic Light from TSO Photography on Vimeo.

[[UIApplication sharedApplication] setApplicationIconBadgeNumber:99];

#import <QuartzCore/QuartzCore.h>

//...

img.layer.borderWidth = 0.7;
img.layer.borderColor = [[UIColor colorWithRed:0 green:0 blue:0 alpha:0.7] CGColor];

#import <QuartzCore/QuartzCore.h>

//...

view.layer.cornerRadius = 20.0;

UIImage *buttonImage = [[UIImage imageNamed:@"blueButton"]  
   resizableImageWithCapInsets:UIEdgeInsetsMake(0, 16, 0, 16)];

//.s. tambien

[buttonBackgroundImage stretchableImageWithLeftCapWidth:33 topCapHeight:0];

Antes de iOS 5:

[uimageview setBackgroundColor:[UIColor colorWithPatternImage:uiimage]];

iOS 5+

imageView.image = [uiimage resizableImageWithCapInsets:UIEdgeInsetsMake(0.0, 0.0, 0.0, 0.0)];

#import <QuartzCore/QuartzCore.h>

Luego, aplicamos la sombra a cualquier UIView

imageView.layer.shadowColor = [[UIColor blackColor] CGColor];
imageView.layer.shadowOffset = CGSizeMake(0.0, 0.0);
imageView.layer.shadowRadius = 1.0;
imageView.layer.shadowOpacity = 0.3;

#define kBtHome	0
#define kElNombre   @"El String"

[UIView animateWithDuration:1.0
                      delay:0.0
                    options:UIViewAnimationCurveEaseInOut
                 animations:^ {
                     bgDisplay.alpha = 0.0;
                 }
                 completion:^(BOOL finished) {
                     bgDisplay.hidden = YES;
                 }];

[UIApplication sharedApplication].networkActivityIndicatorVisible = YES;
[UIApplication sharedApplication].networkActivityIndicatorVisible = NO;

Parece que la cosa va cuajando.

Es preferible callar y pasar por idiota, que hablar y demostrarlo.