This is a simple UIImage category for creating an image based on a UIColor

UIImage+UIColor.h

//
//  UIImage+UIColor.h
//
//  Created by Adam Weeks on 7/27/13.
//  Copyright (c) 2013 AppsVersusRobots, LLC. All rights reserved.
//

#import <UIKit/UIKit.h>

@interface UIImage (UIColor)

+(UIImage *)imageWithUIColor:(UIColor*)color;

@end

UIImage+UIColor.m

//
//  UIImage+UIColor.m
//
//  Created by Adam Weeks on 7/27/13.
//  Copyright (c) 2013 AppsVersusRobots, LLC. All rights reserved.
//

#import "UIImage+UIColor.h"

@implementation UIImage (UIColor)

+(UIImage *)imageWithUIColor:(UIColor *)color
{
    CGRect rect = CGRectMake(0, 0, 1, 1);
    UIGraphicsBeginImageContext(rect.size);
    CGContextRef context = UIGraphicsGetCurrentContext();
    CGContextSetFillColorWithColor(context,
                                   [color CGColor]);
    CGContextFillRect(context, rect);
    UIImage *img = UIGraphicsGetImageFromCurrentImageContext();
    UIGraphicsEndImageContext();
    return img;
}

@end