We were inspired by this pretty invitation suite from Birdhaus Co. with its grey text and dusty lavender-blue envelopes. Whether you want to call it periwinkle, lavender or dusty blue, when combined with grey, it creates such a soft, easy, romantic color combination that can be perfect for a wide variety of wedding styles from classic, like the invitations, to more whimsical or even rustic. Sources, clockwise from top left: Stationery: Birdhaus Co. (via) Cake: A Cupcake a Day, photo by…