My FW is black and I've named her Layla. I got her for a steal at a garage sale.
I don't have names for my other machines, but I call my Kenmore badged Janome "the workhorse" because she goes through anything and keeps on ticking - even having been dumped twice by the cats before I started using a dedicated table instead of the old sewing machine cabinet. The Babylock I might should call "fussy." LOL.