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most companies including Trek and Canyon just have different colours.
Women don't need different geometries than men-- unless we are speaking of roadsters and the need to accommodate long skirts. The main issue confronting short women is not geometry but the availablilty of well designed small frames. It seems that even the shorter professional men cyclists are taller than 5'3" (and tend not to have eyes of blue). The mountain fleas in the peleton-- guys like Nairo Quintana (5'5"), David Etxebarria (5'5"), Paulo Bettini (5'7")-- are not shorter than leading women have been: Jeannie Longo (5'4"), Loentien van Moorsel (5'6"), Barabara Heeb (5'5").
The smallest professional male cyclist I can think of is perhaps Sammy Dumoulin (5'2").
Women specific Cannondales also have different geometry. But yes I agree with Ed most companies including Trek and Canyon just have different colours. Maybe they havent got the memo that its 2016.