Palette Sample app

Hmm, the first one is a no-no you would have to end with `.build().build()`: one for the swatch one for the builder.

The second one looks more interesting though there will be much more allocations in case a custom swatch selector depends on the current list item model, because then you would have to build the target in every bind can't do it once per viewholder. But then if one's really concerned it's not mandatory to use the builder. I'll try how it feels.