Paint wise I use a mixture of Halfords Rattle Cans. Any schemes with patterns or colour details are added with Humbrol Enamels.
Weathering is added with various modelling materials such as powders and pigments.
That one comes fitted as standard on this model but I know they can be purchased seperatly as we've had them before for EBR models. I'll find out and let you know unless someone jumps in before me.