I have a few questions if someone can help me:

1.

can anyone help me understand the different colours in the overview tab?

I know there is white, red (for "danger"), purple, yellow and anything else I am missing?

2.

I am currently jet can mining, lets say someone steals my cargo, I would then fly back and change to a fighter type ship, but how would I track them down? Do I need to scan? Or will they somehow show up somewhere on the map or something?

I just want to be prepared before it happens.