A simple category on UIImage that will tint a named image with a UIColor

UIImage+ImageWithColor.h

//
//  UIImage+ImageWithColor.h
//  WordClock
//
//  Created by James Rutherford on 2012-12-03.
//  Copyright (c) 2012 Braxio Interactive. All rights reserved.
//



@interface UIImage (ImageWithColor)

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

@end

UIImage+ImageWithColor.m

//
//  UIImage+ImageWithColor.m
//  WordClock
//
//  Created by James Rutherford on 2012-12-03.
//  Copyright (c) 2012 Braxio Interactive. All rights reserved.
//

#import "UIImage+ImageWithColor.h"

@implementation UIImage (ImageWithColor)

+ (UIImage *)imageNamed:(NSString *)name imageWithColor:(UIColor *)color
{
	UIImage *img = nil;
	
	img = [UIImage imageNamed:name];
	
	// lets tint the icon - assumes your icons are black
    UIGraphicsBeginImageContext(img.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    
    CGContextTranslateCTM(context, 0, img.size.height);
    CGContextScaleCTM(context, 1.0, -1.0);
    
    CGRect rect = CGRectMake(0, 0, img.size.width, img.size.height);
    
    // draw alpha-mask
    CGContextSetBlendMode(context, kCGBlendModeNormal);
    CGContextDrawImage(context, rect, img.CGImage);
    
    // draw tint color, preserving alpha values of original image
    CGContextSetBlendMode(context, kCGBlendModeSourceIn);
    [color setFill];
    CGContextFillRect(context, rect);
    
    UIImage *coloredImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    return coloredImage;

}


@end

UIImageImageWithColor.h

//
//  UIImage+ImageWithColor.h
//  WordClock
//
//  Created by James Rutherford on 2012-12-03.
//  Copyright (c) 2012 Braxio Interactive. All rights reserved.
//



@interface UIImage (ImageWithColor)

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

@end

UIImageImageWithColor.m

//
//  UIImage+ImageWithColor.m
//  WordClock
//
//  Created by James Rutherford on 2012-12-03.
//  Copyright (c) 2012 Braxio Interactive. All rights reserved.
//

#import "UIImage+ImageWithColor.h"

@implementation UIImage (ImageWithColor)

+ (UIImage *)imageNamed:(NSString *)name imageWithColor:(UIColor *)color
{
	UIImage *img = nil;
	
	img = [UIImage imageNamed:name];
	
	// lets tint the icon - assumes your icons are black
    UIGraphicsBeginImageContext(img.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    
    CGContextTranslateCTM(context, 0, img.size.height);
    CGContextScaleCTM(context, 1.0, -1.0);
    
    CGRect rect = CGRectMake(0, 0, img.size.width, img.size.height);
    
    // draw alpha-mask
    CGContextSetBlendMode(context, kCGBlendModeNormal);
    CGContextDrawImage(context, rect, img.CGImage);
    
    // draw tint color, preserving alpha values of original image
    CGContextSetBlendMode(context, kCGBlendModeSourceIn);
    [color setFill];
    CGContextFillRect(context, rect);
    
    UIImage *coloredImage = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    
    return coloredImage;

}


@end