Theming, CSS reference

As I have time to build the information I will be adding more to this CSS reference sheet, it is currently in a very incomplete state.

SELECTORS

stage {}

Stage is used for setting the base atributes used when there isn't any
override value on the objects further down the cascade.

Normal values are the default color of the theme and the font(s)
and font sizing info for the theme.

.popup-menu-boxpointer {}

It is used to set the attributes of the dropdown panel menu (when you 
right click on an item in the panel or panel).

Normal values ​​are properties of the arrow that originates in the element 
that has been clicked right.