It sounds as if your foxgloves may have been grown from seed, Daisies. Digitalis 'Suttons Apricot' is a form of the common foxglove and the colour of the flowers of seedlings cannot be guaranteed. Unfortunately with foxgloves being biennial they only flower the once so the grower cann't tell what colour the seedlings will be. Your plants should have been labelled Digitalis ex. 'Suttons Apricot' so that you know they may not come true. The only way to guarantee that a form like this comes true is by vegetatitive propagation and I have no idea how you would do this with a biennial.

Thanks Bulbaholic. They're still white but they do look lovely anyway!