Green Tracks?

Someone asked this question before, and it was never answered.

Why are some audio tracks in Logic green? For example, choosing the "warm vocal" preset will show green audio regions in the track.

What follows is the excerpt from the original question.

Green tracks....they're not always midi..... and it's not just cosmetic.

i'm talking green AUDIO tracks....

Logic X has certain presets that are great. the problem is that when you use them, the GREEN audio does not follow the same rules as a blue audio track. as a result, panning doesn't work, muting doesn't mute the track, and i can't option drag to copy the stuff. and a slew of other things i'm sure. so what gives? how can you use the preset, but still be able to pan and do some of the other basic stuff?