If you have a colour-capable Macintosh, the colours of the graph background, scale lines and the trace can be individually coloured. Simply pop up a palette of colours by clicking on one of the colour chips in the Toolbar, then choosing the desired colour from the menu.
The top chip is for setting the scale colour. The one partially hidden below it is for setting the background colour. Both of these can be changed at any time, even while a graph is being plotted. The chip at the bottom with the wavy line is for setting the trace colour. Changing this will force the graph to be replotted.
