By default, the Border property is exLinesInvalid. The Border property specifies the style to display the pool's border. The Background(exPoolBorder) property defines the border for all pools on the surface, while the Border property is exLinesInvalid. The BorderColor property specifies the color to show the pool's border. The HeaderBorder property specifies the style of the border to show on pool's header. The Color property specifies the visual appearance/ background color of the pool. The Pattern property specifies the pattern/frame to be shown on the pool's background.

The following screen shot shows the pool's border in red: