Full animation 2D/ How to change colours I am trying to draw on top of the 3D models. When opening 3d model and then selecting " 2D Full Canvas" I can draw well but I can not find how to change colours. 

So my question how to change colours in "2D full Canvas mode" ?

Or how to get same template as you get when opening 2D animation from file menu ?
You can change the colour under Properties Editor > Material Tab.

In "2D Full Canvas" layout you don't see this editor.



Since you have some material set, you should switch between materials from 3D View > Properties (N) > Brush just press Pin button.