The above card is draped in red because it’s an appropriate reflection of the brand’s services and products. And there’s no need to add more colors. The logotype in itself is quite unique and imparts a memorable quality to the business card. There’s no need to experiment with each and every detail when you already have the one thing that makes you stand apart from the rest.
Every designer stresses that a business card should be simple and straightforwardly honest. And this card is exactly that. It isn’t a high-graphic card, riddled with tons of images or illustrations because the designer knows that these details will serve to overwhelm the reader.