No, RB doesn't even have a 'tone' control.
Just erase the 6 blank tracks and save as SEQ file.
I like to use 'Make all BB tracks regular tracks'
Then in the same menu, use Tracks - Remove Tracks
Which not only gets rid of them but also moves the other tracks up so you don't have 6 empty tracks at the top.

Of course YMMV

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Make your sound your own!
.. I do not work here, but the benefits are still awesome