I'm sure I'm not the only person around with some color blindness.  I've been staring at the treaties tab of the foreign policy window for a while now trying to figure out what color all those lines are.  The timeline is usually also impossible for me to tell which line is which race.  I try to make my own color stand out and I only use it to see how I rank to the AI.

Is there another way to tell what races have treaties, alliances, trade, etc?  Especially since the lines are so skinny, it makes it even harder for me to distinguish.  In my current game, most of the lines are probably trade, but heck if I can tell the difference.  Sometimes I can't even distinguish the bright red War line.

I usually don't even bother looking at this screen, because I can't use it.  I vaguely remember some of the lines have arrows on the end?  Does that mean alliance or does it mean treaties?  Those two colors look about the same to me.

In Civilization 4, you can toggle races and relationship types, so that gives me a way to figure out what the lines are.  But I don't see an option like that in this game.