To celebrate my birthday (tomorrow!) I took the liberty to implement a couple of new features. For a long while I've been planning to add tabs to the configuration options window, so that it could be cleanly extended with new options. After I got that out of the way, it was quite straightforward to go on and add a couple of additional options which have been requested several times before:
It is now possible, from Options => Colours, to select the 5 colours used for track lines. You can also tune the track line width to increase (or decrease!) the visibility of each line.
Each station always gets the same track colour (colour 1, 2, 3, 4 or 5) out of the 5 selectable colours. If you find that your car always gets a blue line, and you would want to switch that to red, you'll see that colour 3 is blue by default, so you can switch colour 3 to red. And maybe switch colour 1 to blue to reduce the amount of red track lines. You could also set all 5 colours to red, if that's your favorite.
You can also enable sound effects from Options => Sound. Currently the only supported effect is a "tock" when a tracked station moves to a new position. I'm going to add different sound samples later. If you have other ideas for events which could trigger a sound, please let me know!