Why not donate it since it was originally made for vB.org (you know you want to)

. It would also help vBulletin.org out since the admins and mods here already do enough to help everyone else (hacks, support, and other such things)
But you are the designer, it is up to you and I understand if you can not donate it, just a small suggestion and it would be kind

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It is a very nice design indeed

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- SaintDog