I think Matt talked about this during his Royal Institution talk. The way that toys have cutified over the years - our predisposition for big eyes and bright colours 'evolving' each generation of toys to be cuter than the last. (See, for instance, this post about the cutification and sexualisation of My Little Pony).
We saw these Yoo Hoos in Hamley's window. I like the look of them. But I can't help wondering how outlandish they'd have looked 20 years ago.