Well it looks like you will be kept busy
Looking at the website the colour isn't coming about due to demand for the unusual but rather on working/performance ability which is fine.
If you're up for one of these dogs give them a call and see what they have to say.
If you're looking for a performance dog agility/dances with dogs that type of thing then I'd be putting preference on a pup coming from those lines. Though most BC do very well in those area anyway.
My male Whippet practices fly-ball with a serious team of BC's, (we don't compete just attend training night, unless they are gearing up for a competition). They thrive on it however Mickey and I come home with a headache from all the barking.