- (void) changeTextColorForUIActionSheet:(UIActionSheet*)actionSheet {
    UIColor *tintColor = [UIColor redColor];

    NSArray *actionSheetButtons = actionSheet.subviews;
    for (int i = 0; [actionSheetButtons count] > i; i++) {
        UIView *view = (UIView*)[actionSheetButtons objectAtIndex:i];
        if([view isKindOfClass:[UIButton class]]){
            UIButton *btn = (UIButton*)view;
            [btn setTitleColor:tintColor forState:UIControlStateNormal];

        }
    }
}

[actionSheet showInView];

UIActionSheet *actionSheet = [[UIActionSheet alloc] initWithTitle:@"Actionsheet" delegate:self cancelButtonTitle:nil destructiveButtonTitle:nil otherButtonTitles:nil];
        [actionSheet addButtonWithTitle:@"Button 1"]; //Blue color
        [actionSheet addButtonWithTitle:@"Button 2"];
        [actionSheet addButtonWithTitle:@"Cancel"];
        [actionSheet addButtonWithTitle:nil];
        [actionSheet setCancelButtonIndex:2];
        [actionSheet setDestructiveButtonIndex:1];
        [actionSheet showInView:self.view];
        UIButton *button = [[actionSheet subviews] objectAtIndex:1];
        UIImage *img = [button backgroundImageForState:UIControlStateHighlighted];//[UIImage imageNamed:@"alert_button.png"];
        [button setBackgroundImage:img forState:UIControlStateNormal];

- (void)willPresentActionSheet:(UIActionSheet *)actionSheet
{
    for (UIView *_currentView in actionSheet.subviews)
    {
        if ([_currentView isKindOfClass:[UIButton class]])
        {
            UIButton *button = (UIButton *)_currentView;
            [button setTitleColor:YOUR_COLOR forState:UIControlStateNormal];
        }
    }
}