NSColor+Hex.h

//
//  NSColor+Hex.h
//
//  Created by 61 on 2/1/12.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//

#import <AppKit/AppKit.h>

@interface NSColor (Hex)
+ (NSColor*)colorWithHex:(NSInteger)hexValue alpha:(CGFloat)alphaValue;
+ (NSColor*)colorWithHex:(NSInteger)hexValue;
+ (NSColor*)whiteColorWithAlpha:(CGFloat)alphaValue;
+ (NSColor*)blackColorWithAlpha:(CGFloat)alphaValue;
@end

NSColor+Hex.m

//
//  NSColor+Hex.m
//  
//  Created by 61 on 2/1/12.
//  Copyright (c) 2012 __MyCompanyName__. All rights reserved.
//

#import "NSColor+Hex.h"

@implementation NSObject (NSColor)

+ (NSColor*)colorWithHex:(NSInteger)hexValue alpha:(CGFloat)alphaValue
{
    return [NSColor colorWithDeviceRed:((float)((hexValue & 0xFF0000) >> 16))/255.0 green:((float)((hexValue & 0xFF00) >> 8))/255.0 blue:((float)(hexValue & 0xFF))/255.0 alpha:alphaValue];
}

+ (NSColor*)colorWithHex:(NSInteger)hexValue
{
    return [NSColor colorWithHex:hexValue alpha:1.0];
}

+ (NSColor*)whiteColorWithAlpha:(CGFloat)alphaValue
{
    return [NSColor colorWithHex:0xffffff alpha:alphaValue];
}

+ (NSColor*)blackColorWithAlpha:(CGFloat)alphaValue
{
    return [NSColor colorWithHex:0x000000 alpha:alphaValue];
}

@end