How to change color of selected row in UIPickerView

Ok, maybe I'm missing something really simple and I apologize if that's the case, however, I've googled every permutation of the title and have not found! So this is simply what I want to do: change the background color of the label I'm using as the row view in a 2 component pickerview when that row has been selected. So I thought this would work:

if (row == [pickerview selectedRowForComponent])    viewlabel.backgroundColor = redcolor;

but this doesn't work. It seems to arbitrarily choose which row to color and sometimes even give a bad access error. I've tried all different clauses to no effect! ANy suggestions would be greatly appreciated!!

Here's the full method:

- (UIView *)pickerView:(UIPickerView *)pickerView viewForRow:(NSInteger)row forComponent:(NSInteger)component reusingView:(UIView *)view{    if (component == kNumberComponent) {#define PICKER_LABEL_FONT_SIZE 24#define PICKER_LABEL_ALPHA 1.0        // UIFont *font = [UIFont boldSystemFontOfSize:PICKER_LABEL_FONT_SIZE];        UIFont *font = [ UIFont fontWithName:@"AppleGothic"  size:24];        UILabel *carsLabel =[ [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 75, 50) ]autorelease];        //[picker selectRow:row inComponent:component animated:YES];        NSString *pickerText = [self.numbers objectAtIndex:(int)row];        carsLabel.text = pickerText;        carsLabel.textAlignment = UITextAlignmentCenter;        NSLog(@"carsLabel = %@",carsLabel.text);        //carsLabel.text = @"maybe because the string isn't long enough";        carsLabel.textColor = [UIColor blackColor];        carsLabel.font = font;        carsLabel.opaque = YES;        [view addSubview:carsLabel];        return carsLabel;       } else {        UIFont *font = [ UIFont fontWithName:@"AppleGothic"  size:18];        UILabel *carsLabel = [[[UILabel alloc] initWithFrame:CGRectMake(0, 0, 225, 50)] autorelease];        id fact = [self.facts objectAtIndex:(int)row];        NSString *pickerText = @"Dictionary Entry";        if ( [fact isKindOfClass:[NSString class]]) {            pickerText = [self.facts objectAtIndex:(int)row];        }         carsLabel.text = pickerText;        carsLabel.textAlignment = UITextAlignmentCenter;        NSLog(@"carsLabel = %@",carsLabel.text);        //carsLabel.text = @"maybe because the string isn't long enough";        carsLabel.textColor = [UIColor blackColor];        carsLabel.font = font;        if ( row == 0) {        carsLabel.backgroundColor = [UIColor redColor];        }        //carsLabel.backgroundColor = [UIColor colorWithPatternImage:[UIImage imageNamed:@"blackboard.png"]];;        carsLabel.opaque = YES;        [view addSubview:carsLabel];        return carsLabel;    }    return nil;}