The environment toolbox hosts parmeters to change background colors and the appearance of the grid defining the ground plane.
1 The background color at the top of the viewer window.
2 The background color at the bottom of the viewer window.
3 The color of the grid lines at major intervals.
4 The color of the grid lines at minor intervals.
5 Drag the white square horizontally to adjust the saturation, and vertically to change the brightness of the selected color.
6 Changes the hue of the selected color.
7 Drag the slider to adjust the opacity of the grid. By clicking the button on the left, the grid can be switched on and off.