The Brush tab provides configuration options for the object outline.
The following setting options are available:
Activates filling.
When the brush option is deactivated, the background of the object is transparent.
Style
Selects a style. A style is always a mixture of two colors: the foreground and background color. No style is selected by default.
Foreground
Displays the foreground color. Click the button to change the foreground color, i.e., apply any changes you make in the Select Colour area to the foreground color. 
The button displays the fill color if no style has been selected.
Background
Displays the background color. Click the button to change the background color, i.e., apply any changes you make in the Select Colour area to the background color.
The button is grayed out if no style has been selected.
Color Circle
Determines the fill color. You can move the small square in the middle of the color circle. This determines the color.
You can see which color has been selected in the Color display field.
Brightness Slider
Determines the brightness of the outline color. You set the desired value with the slider.
You can see the brightness that has been selected in the Color display field.
Hue
Sets the hue. You can enter a value between 0 and 255. The square moves around the radius of the color circle counterclockwise beginning on the right with the value 0 = red.
Saturation
Defines the saturation of the color. You can enter a value between 0 and 255. The square moves across the color circle in a straight line towards the exterior. A saturation of 255 means that one color component has a value of 255 and the other two both have a value of 0.
Brightness
Determines the brightness of the color. You can enter a value between 0 and 255. The brightness slider moves upwards or downwards. 255 means maximum brightness.
Red
Defines the red component of the color. You can enter a value between 0 and 255. 255 being completely red.
Green
Defines the green component of the color. You can enter a value between 0 and 255. 255 being completely green.
Blue
Defines the blue component of the color. You can enter a value between 0 and 255. 255 being completely blue.
 


Brush Tab