Leghorns come in all sorts of colors including Silver (Full list: Light Brown, Dark Brown, Red, White, Buff, Columbian, Barred, Black Tailed Red, Silver, Golden, think that's all according to APA), but these birds in question are OEGB. They have Old English type and white legs. Leghorns have leghorn type and yellow legs.
Haha. Those were the only ones that I could remember LOL!