Most of his work is very traditional realism in watercolor. Good stuff too with a big nod to Andrew Wyeth. I'll post one of his darker ones below, but I especially enjoy these little illustrations with incorporated text.
There's gobs of paintings on his website
www.griffa.com
"Il Naufragio di Massimiliano d'Austria" 70 x104 cm
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"Sciara del Fuoco #2" 72 x 103cm
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"Dias & Albatros" 56 x 76 cm