The best persona I've ever used, with light colors without big contrasts, which give a technological sensation. For you to have an idea, I expanded my favourites bar to view a greater part of it and created this account just to rate it.
I love this Persona the most. It fits quite well with the default theme of Firefox and ColorfulTabs add-on. It'll really improve the experience. I recommend it to anyone who wants something relevant to Firefox which is not too distracting.