If you want a non-traditional color for a Christmas card try Bermuda Bay, Whisper White and Basic Black.
I stamped the flower image from Joyful Christmas on Vellum card stock with VersaMark ink and heat embossed with black embossing powder. Turned the image over and colored with Stampin' Write Markers. The center is Daffodil Delight and the flower petals are Bermuda Bay. I colored all the petals and then went back over just sections to create a two-toned look.