CSS-like hex notation colors in Objective C

gistfile1.m

// header

#ifdef TARGET_OS_IPHONE
#define NativeColor UIColor
#else
#define NativeColor NSColor
#endif

NativeColor* hexColor(int hex);
NativeColor* hexaColor(int hex, float a);

// implementation

NativeColor* hexColor(int hex)
{
    return hexaColor(hex, 1.0);
}

NativeColor* hexaColor(int hex, float a)
{
    int r = (hex & 0xff0000) >> 16;
    int g = (hex & 0x00ff00) >> 8;
    int b = (hex & 0x0000ff);
    
    return [NativeColor colorWithRed:r / 255.0
                               green:g / 255.0
                                blue:b / 255.0
                               alpha:a];
}