Some Triple Layers and Dark Bottom Layers

I had a 12 pack of Shiner White Wing so it was a constant in my black and tan experimentation over the past week or two. Also used Breckenridge Vanilla Porter a few times. I think I had a bit of success.The pictures speak for themselves. 

I inadvertently tried the Session Black Lager as a bottom layer with the Shiner White Wing and it was only later that I realized that it shouldn't have worked.  One of my 'rules of thumb' was that black lagers generally worked well as top layers.  By 'generally' I had meant that they either worked or they didn't but here the Session worked as a bottom layer... WTF?  So much for rules of thumb!  You can see, however, that the Session and Shiner did mix a bit as its coloring is darker than the Breckenridge and Shiner combo.  

FULL DISCLOSURE: No spoons were harmed in the making of these layered beers.