It's impossible to make a layout child of Tabula Rasa, only of Core2. When I tried to apply this, I found my sidebar was on the bottom, and none of the colors were present.

I tried it as layout child of s2.core2, with the themes as children under Nouveau Oleanders;

Then, I tried them as children only under Tabula Rasa. While I did get the sidebars back, none of the formatting that you had was present.