Mini-Map colors?

Okay. So I'm looking at my mini-map, and I'm able to identify a few things. Gray boxes for other people's builds, blue boxes for my builds... But what's purple, exactly?

Objects that are deeded to a group are purple.

Aha. I knew it was something like that. Thanks.

# Dark gray blocks - These are objects owned by others. In a Region with lots of buildings, you'll see lots of these.
# Cyan blocks - These are objects you own in the area. If you have land and own a house, they'll appear cyan. If you build in a sandbox, you'll see this too. Cyan blocks on the map can be useful for finding lost objects. For example, if you accidentally jump out of your vehicle and it keeps moving, you can tell where it's going by following the light blue.
# Fuchsia blocks - These are objects deeded to (owned by) a group you're in. For an object to be group-owned, it must be set to Share with group, then Deed... must be clicked.
# Tiled dark blue - These are areas beyond your vision. You can see them by moving closer, or increase your draw distance: in the Graphics tab of the Preferences window, click Custom, then raise Draw Distance.
# Red areas - The Mini-Map turns red if the Region is offline or your Second Life Viewer has lost its connection.