Convert any color into RGB

gistfile1.m

- (NSColor *)mn_rgbColor;
{
  if ([[self colorSpaceName] isEqualToString:NSCalibratedRGBColorSpace]) return self;
	
    // try to convert to RGB
	NSColor *color = [self colorUsingColorSpaceName:NSCalibratedRGBColorSpace];
	if (color) return color;
    
    // convert to image and extract first px. The result won't be 100% correct, but better than a completely undefined color
    NSBitmapImageRep *bitmapRep = [[NSBitmapImageRep alloc] initWithBitmapDataPlanes:NULL pixelsWide:1 pixelsHigh:1 bitsPerSample:8 samplesPerPixel:4 hasAlpha:YES isPlanar:NO colorSpaceName:NSCalibratedRGBColorSpace bytesPerRow:4 bitsPerPixel:32];
    NSGraphicsContext *context = [NSGraphicsContext graphicsContextWithBitmapImageRep:bitmapRep];
    
    [NSGraphicsContext saveGraphicsState];
    [NSGraphicsContext setCurrentContext:context];
    [self setFill];
    NSRectFill(CGRectMake(0, 0, 1, 1));
    [context flushGraphics];
    [NSGraphicsContext restoreGraphicsState];
    NSColor *rgbColor = [bitmapRep colorAtX:0 y:0];
    
    [bitmapRep release];
    
	return rgbColor;
}