Multiple Color Assignment - NIGHTMARE
At some point Illustrator added some kind of multiple color assignment where a shape could be assigned a color and then also the group it's in could be assigned a different color or something like this. I just want to say that this "feature" has cost me so much wasted time trying to change the color of an object. It makes the eyedropper not work correctly and making a simple color change become a nightmare because it has it has multiple assignments and it just won't change colors and you have hit "no fill" a bunch of times to clear it out or it just won't change colors and sometimes that won't even work. I HATE IT!!!