Tabletop nomenclature

Sometime I'd like to know why those colored candleholders seen on restaurant tabletops (usually enclosed in netting, also) are called "Venetians." The tonier ones, without the nets, are often called Euro-Venetians. The claims for legnth of burn-time range from 60 to 72 hours. All paths lead to the Candle Corporation of America, sometimes apparently known as Ambria, a part of the Sterno group! No; that's wrong. Sterno is part of the Candle Corporation. Now I know.