Hi guys, just an update.
Lorenzo had sent me pictures of the respective swatches so can get a better idea of what they look like side by side:
Vitello blue with blue hatch grain
The Vitello Blue can also be burnished / darkened to bring it closer to the shade of blue hatch grain - as seen here.
Vitello Etrusco with Sienna hatch grain
Vitello Meleze with brown hatch grain