If you can't see the colored in Quest locations then your not Tracking your Quests. On the Drop down Quest list you have 4 buttons at the top. Mouse over them one says some thing like Track Quest Or Show Quests if that's not Clicked, then you don't get any Helpful Colored in Locations For Completing kill Quest.
lol sorry i love using these things lol
Hope this helps you,
hope you understand
the help any way lol
lol