Swap Brush
	Description The Swap Brush tool allows you to replace the foreground and background colours with each other.
	To use this tool... Select the foreground and background colours you will be painting with and then click on the Swap Brush button. Place the cursor where you want to start replacing the colours and hold down one of the mouse buttons. Holding down the left mouse button will replace the background colour with the foreground colour, while holding down the right mouse button will replace the foreground colour with the background colour. Moving the mouse will swap the colours. The size, tolerance and style of the Swap Brush can be altered by double-clicking on the Swap Brush button.