Retro Chalkboard Couples Baby Shower Barbecue Party Invitations Super cute and so retro! Celebrate the arrival of the new baby with a mid-century modern feel invitation. Aqua and red accents with red barbecue grill, retro signs and fonts with a cocktail and red rattle all on a chalkboard background. Great for the couple who wants an outdoor party. Hand drawn illustration by McBooboo.