All you need to know about Flower Color Theory. Get the ultimate flower arrangement reference book from contemporary floral design studio around the world.moreA rose by any other name might smell as sweet, but does a selection of roses of any old color look good? Probably not; just ask Darroch and Michael Putnam, the acclaimed US floral designers and founders of Putnam & Putnam, suppliers of flowers to such notable figures as Gwyneth Paltrow, Jason Wu, Brandon Maxwell and Beyoncé, among others.