Style the default "Loading" view of PFQueryTableViewController the "hard way" as the current API does not provide this feature.

PFLoadingView-Style.m

- (void)stylePFLoadingViewTheHardWay
{
    UIColor *labelTextColor = [UIColor whiteColor];
    UIColor *labelShadowColor = [UIColor darkGrayColor];
    UIActivityIndicatorViewStyle activityIndicatorViewStyle = UIActivityIndicatorViewStyleWhite;

    // go through all of the subviews until you find a PFLoadingView subclass
    for (UIView *subview in self.view.subviews)
    {
        if ([subview class] == NSClassFromString(@"PFLoadingView"))
        {
            // find the loading label and loading activity indicator inside the PFLoadingView subviews
            for (UIView *loadingViewSubview in subview.subviews) {
                if ([loadingViewSubview isKindOfClass:[UILabel class]])
                {
                    UILabel *label = (UILabel *)loadingViewSubview;
                    {
                        label.textColor = labelTextColor;
                        label.shadowColor = labelShadowColor;
                    }
                }

                if ([loadingViewSubview isKindOfClass:[UIActivityIndicatorView class]])
                {
                    UIActivityIndicatorView *activityIndicatorView = (UIActivityIndicatorView *)loadingViewSubview;
                    activityIndicatorView.activityIndicatorViewStyle = activityIndicatorViewStyle;
                }
            }
        }
    }
}