Also available in amber and orange (not shown).
Williams/Bally reference numbers:
Amber - 03-8319-8
Black - 03-8319-7
Blue - 03-8319-10
Clear - 03-8319-13
Green - 03-8319-2
Orange - 03-8319-12
Purple - 03-8319-18
Red - 03-8319-9
Teal - 03-8319-25
Yellow - 03-8319-16