private void testColors(int[] n) {
        if (n.length != nDecks)
            throw new RuntimeException("BoosterDraftAI : testColors error, numbers array length does not equal 7");

        Set<Integer> set = new TreeSet<Integer>();
        for (int i = 0; i < nDecks; i++)
            set.add(Integer.valueOf(n[i]));

        if (set.size() != nDecks)
            throw new RuntimeException("BoosterDraftAI : testColors error, numbers not unique");

        for (int i = 0; i < nDecks; i++)
            if (n[i] < 0 || deckColorChoices.length <= n[i])
                throw new RuntimeException("BoosterDraftAI : testColors error, index out of range - " + n[i]);
    }//testColors()