I didn't fancy a blue one myself as I wear jeans most of the time and double denim is awful! (I know it's still denim but you know what I mean)
Black doesn't go with jeans either. The pink will go well with jeans and and dresses, and linen trousers etc.
I bought a bra too - when will I learn my lesson about M&S bras? Anyway, doesn't fit, the cups are too small and the wires float somewhere over my sternum as if they are levitating. Annoyingly they sent me two by mistake as well.