> Brick troubles:
> ================================================================
>
> #declare White_Paint = material { texture {pigment {color White}  finish{diffuse
> 0.9 } normal {bumps scale <1,.1,.1>}} };
>
> #declare White_Wall =
> material { texture{ pigment {brick  //material {White_Paint} //  no likey
>       //material {White_Paint} //  no worky
Normal, you try to use a material where a texture is expected.

>       pigment {Gray50}
>       pigment {color rgb <0.96, 0.93, 0.86>}
>       brick_size <8, 8, 16> }
>       normal {brick brick_size <8, 8, 16>} finish {diffuse 0.9 phong 0.2}} };
>
> Somebody please set me straight here.
>
>
Try something like this:

material{brick material(material_1} material{material_2}}

Another option would be to use a tilign pattern.
the pattern tiling 10 properly scalled and rotated to be applyed on a 
wall seem like a good candidate.
It use a xx_map. It works very good as a bump_map to controll your normals.

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