Standard Settings for UILabel in MKAnnotation Callout Bubble

I am showing customized Callout Bubbles with the help of this tutorial tutorial

If I show a custom Callout Bubble I add a view Labels into that bubble and I want them to look exactly like the standard ones. So does anybody know开发者_如何学Go the settings like font, size, shadowColor, shadowOffset and stuff like that for both the title and the subtitle Label?

Or where I could find them?