I am not sure if there are certain exact standards required for finding the ball or not.

I have VF on 3 computers and I have all 5 families with balls now.
However..I have tried to help my children find the ball on their own VF games to no avail...yet.

Keep trying...or just give up.
I say that because when I gave up I found my very first red ball.
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T.L.Davis-Miller
"Make the school fit the child instead of making the child fit the school." A.Neill