I placed my order for 7 white juggling balls today at the WJF store. So hopefully within a week I can retire my homemade, non-matched set of 5. I emailed Jason Garfield about these balls as far as finish and size. He responded that they seem to be pretty resistant to dirt buildup (my concern with buying white) and that for him they are the perfect size for juggling 7.
I guess that the only problem with this order is that it removes yet another excuse why I am not a great juggler. I can't blame it on bad equipment any more :)
I'll let you know how they are when they get here and I get a chance to use them for a practice or 2.