Replace color of a UIImage with another color

UIImage+Colorize.h

//
//  UIImage+Colorize.h
//  Coderwall
//
//  Created by Coderwall on 11/04/15.
//  Copyright (c) 2015 Coderwall. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface UIImage (Colorize)

- (UIImage *)colorImageWithColor:(UIColor *)color;

@end

UIImage+Colorize.m

//
//  UIImage+Colorize.m
//  Coderwall
//
//  Created by Coderwall on 11/04/15.
//  Copyright (c) 2015 Coderwall. All rights reserved.
//

#import "UIImage+Colorize.h"

@implementation UIImage (Colorize)

- (UIImage *)colorImageWithColor:(UIColor *)color {
	
	/**
	 *  https://gist.github.com/1102091/b196c1ec001d1a69b9940f0f32043d62d5f596d4
	 *  https://coderwall.com/p/nne_ow/creating-colored-images-in-ios
	 */
	
	// Make a rectangle the size of your image
	CGRect rect = CGRectMake(0, 0, self.size.width, self.size.height);
	
	// Create a new bitmap context based on the current image's size and scale, that has opacity
	UIGraphicsBeginImageContextWithOptions(rect.size, NO, self.scale);
	
	// Get a reference to the current context (which you just created)
	CGContextRef c = UIGraphicsGetCurrentContext();
	
	// Draw your image into the context we created
	[self drawInRect:rect];
	
	// Set the fill color of the context
	CGContextSetFillColorWithColor(c, [color CGColor]);
	
	// This sets the blend mode, which is not super helpful. Basically it uses the your fill color with the alpha of the image and vice versa. I'll include a link with more info.
	CGContextSetBlendMode(c, kCGBlendModeSourceAtop);
	
	// Now you apply the color and blend mode onto your context.
	CGContextFillRect(c, rect);
	
	// You grab the result of all this drawing from the context.
	UIImage *result = UIGraphicsGetImageFromCurrentImageContext();
	
	// And you return it.
	return result;
}

@end