yep, its really tiny plaster bricks. superglue works fine but i dont know how many times ive been repairing it. now the whole "inside" of the wall is covered with milliput so it shouldnt break.
andy, brick are painted with VMC "burnt red" and highlighted with a P3 color i dont remember the name of... some white-yellow-ish color. some scaly green in the shading, makes it look dirtier.