I can see the difference between Green Tiger and Caserta. Green Tiger has those heavy stripes. Caserta is light green background with dark green mottling. Both of these look to be much prettier than your average dark green common zucchini.
And here is one of the little Poquito's just planted out.
So you might be thinking what difference does it make? It does to me. I want my zucchini to be more appealing and prettier than those dark green types you see commonly at the supermarket.