Colour fills to walls etc on plan view

[neil.armour]

I am trying to add colour to some of my plan views where i may want to show the new cavity walls as colour to the brickwork and blockwork but with a colour background, ie you would still see the brick hatch but add orange fill behind instead of plain white. Im sure this is possible but i have been looking around Revit and cant seem to work it out.
Any help from you guys would be really appreciated

[neil.armour]

Its ok folks must of had one of those moments, not thinking straight. I have sussed it out. As the Meerkat says...... simples!!!