UISegmentedControl segment order issue

i'm using the following code to set the color of each segment in UISegmentedControl.

for (int i = 0; i < [self.controlStatus numberOfSegments]; i++)
    {
        NSArray *ar=self.controlStatus.subviews;

        if ([[self.controlStatus titleForSegmentAtIndex:i] isEqualToString:@"ON"])
        {
            [[self.controlStatus.subviews objectAtIndex:i] setTintColor:[UIColor greenColor]];
        }
        else if ([[self.controlStatus titleForSegmentAtIndex:i] isEqualToString:@"OFF"])
        {
            [[self.controlStatus.subviews objectAtIndex:i] setTintColor:[UIColor orangeColor]];
        }
        else if ([[self.controlStatus titleForSegmentAtIndex:i] isEqualToString:@"HIDE"])
        {
            [[self.controlStatus.subviews objectAtIndex:i] setTintColor:[UIColor redColor]];
        }
        }
    }

But i'm not getting the color as i need in corresponding segment. Sometimes the colors are as follows:
1st segment - GREEN
2nd segment - ORANGE
3rd segment - RED

But at some stage when i navigate to other pages and come back, the color changes:
1st segment - RED
2nd segment - ORANGE
3rd segment - GREEN

Can anyone give me an idea about whats happening here.