Control panel overlay navigation with PSPDF

Hi I have a PSPDFViewController built into the UINavigationController, which I then have as the left controller in the splitview controller.

I set the color of the navigation bar to match the navigation bar of the right controller, but it seems that PSPDFKit changes its color or alpha slightly. Is there any way to disable this?

This is how I create the controller:

PSPDFViewController *pspdfController = [[PSPDFViewController alloc] initWithDocument:document];
UINavigationController *pspdfNavigationController = [[UINavigationController alloc] initWithRootViewController:pspdfController];

pspdfNavigationController.barTintColor = [[UIColor alloc] initWithRed:252.0/255.0 green:14.0/255.0 blue:47.0/255.0 alpha:1.0];;
pspdfNavigationController.backgroundColor = [[[UIColor alloc] initWithRed:252.0/255.0 green:14.0/255.0 blue:47.0/255.0 alpha:1.0];
pspdfNavigationController.tintColor = [UIColor whiteColor];
navbar.translucent = NO;