Let’s turn to a bit of theory about what the Color/Diffuse channel does …
When someone asks “What color is that?” they are referring to the diffuse color. A surface’s diffuse color is the base color that shows when pure white light strikes the surface. For human skin, this can range from a light yellowish pink to a deep brown. Most plant leaves are shades of green. Pine boards are usually a light golden brown. A mushroom is a light brown color with spatterings of a deeper brown.
In DAZ Studio, you can assign a solid color to an object but to achieve more realism, you can also assign a diffuse texture map. This map is a 2D representation of the colors in your 3D object. For example, there could be two diffuse/color maps for a mushroom, one for a light brown mushroom and another for a darker brown mushroom.
Moving on to how you assign diffuse properties, let’s take a look at the Basic and Advanced sub-tabs in the Surfaces Tab.
The following settings appear in the Basic sub-tab for the Color|Diffuse channel:
The following settings appear in the Advanced sub-tab for the Color|Diffuse channel: