AutoCAD Architecture :: Material Definition Display Components

I want to change the color of a material definition in 2d wireframe (plan view).  For example, for walls, when the mat. def. is checked in the wall display props, the hatching shows orange->color 30.

When I look at one of the materials listed for said wall, in style manager, for that display component, there are diplay components similar to an object format, but in the mat. def. the components control the color (see attached example).

Now is there a "master setting" to change them - I want to change say the plan linework or section hatch to a different color to match our layer color standards or do I have to go into every since display rep. for every single mat. definition and change them or is there a way I can do it once & all will change?

The out of the box objects are great but what I am worried about is that those colors that are given don't work well with our office standard, esp. if we go back to old projects.