Also available in orange (not shown).
Williams reference numbers:
Blue: B-11696-1, A-14691-1 & A-17799-1
Green: B-11696-2, A-14691-2 & A-17799-2
Red: B-11696-4, A-14691-4 & A-17799-4
White: B-11696-5, A-14691-5 & A-17799-5
Yellow: B-11696-6, A-14691-6 & A-17799-6
Orange: B-11696-15, A-14691-15 & A-17799-15
Chicago Gaming Company reference numbers:
Blue - PIN-146911
Green - PIN-146912
Red - PIN-146914
White - PIN-146915
Yellow - PIN-146916
Orange - PIN-1469115