If FStyle is 0 (solid fill) FillCol defines the colour with which the object is filled. If FStyle is in the range 1-6 (pattern fill) it defines the colour of the lines that make up the pattern. The areas between the lines are filled using the colour specified by BCol, or are left undrawn (transparent) if BCol is not specified. If FStyle contains the name of a Bitmap object, the value of FillCol is ignored.

A single colour is represented by a single number which refers to a standard colour, or by a 3-element vector which defines a colour explicitly in terms of its red, green and blue intensities. A negative value of FillCol refers to a standard MS-Windows colour as described below. Positive values are reserved for a possible future extension.

FillCol	Colour Element	FillCol	Colour Element
0	Default	¯11	Active Border
¯1	Scroll Bars	¯12	Inactive Border
¯2	Desktop	¯13	Application Workspace
¯3	Active Title Bar	¯14	Highlight
¯4	Inactive Title Bar	¯15	Highlighted Text
¯5	Menu Bar	¯16	Button Face
¯6	Window Background	¯17	Button Shadow
¯7	Window Frame	¯18	Disabled Text
¯8	Menu Text	¯19	Button Text
¯9	Window Text	¯20	Inactive Title Bar Text
¯10	Active Title Bar Text	¯21	Button Highlight

If instead, FillCol contains a 3-element vector, it specifies the intensity of the red, green and blue components of the colour as values in the range 0-255. For example, (255 0 0) is red and (255 255 0) is yellow. Note that the colour realised depends upon the capabilities of the display adapter and driver, and the current Windows colour map.

FillCol may also be a vector of 3-element vectors specifying a set of colours for the constituent parts of the object. For example, a Poly object consisting of four polygons, may have a FillCol property of four 3-element vectors.