Current tyres: Panaracer Pasela 25mm, Veloflex Evo Corsa 25mm although I prefer the previous version which was the Master 25, Vittoria Rallye.
Old tyres, Vittoria Open Corsa 23mm, Vittoria Corsa CX/CG.
All have to have black tread and "natural" sidewalls.
I've got one Vittoria silk tub on a wheel somewhere, I haven't ridden it for a long time but I do remember the amazing sizzling sound!