You can find this option under Manage Settings > Public Web Pages:

Blue (default):

Burgundy:

Gold:

Green:

Magenta:

Plum:

Slate:

Teal:

You can find this option under Manage Settings > Public Web Pages:
Blue (default):
Burgundy:
Gold:
Green:
Magenta:
Plum:
Slate:
Teal: