Garmin - multiple courses

Is there a way to display more than 1 trail at the same time on the Garmin Edge 800?

Reason why, is that when I go out, I have setup beforehand a trail to follow. But then I have also another trail (or two) for other possible trail(s) to explore. So, is it possible to have more than 1 trail in what they call a 'course'? or to display 2 courses at the same time?

And also, on the same subject; why does my trail display purple – when I've setup on BaseCamp (+ again on the course options, from the unit) to be bright red?

…if someone from iOS could move to Garmin?1