The color fill tools work in the same manner as the hatch and section tools, however the color of the fill is determined by the layer which is selected (the ‘active’ layer). The modifier is used to set the scale of the color fill—this useful when the area being filled does not completely fill in (for example sections are not being ‘colored’). Since color fill is placed on the drawing as a series of triangles, changing the scale will produce more triangles which will more accurately fill in the area.