This wonderfully majestic Pokemon just begs to be brought to life with color! I would start by using a dark blue on its body and wings, which will really make Kyurem standout against any background. For the white head and crest, use a light gray or light blue. For the four white spikes on its back, as well as its two long tails, use a bright white. The two small claws on his wings and feet can be shaded a darker gray, while the blade-like crest on its lower jaw can be highlighted by using a lighter shade of blue. The small red crystals on Kyurem's cheeks can be colored in a bright red, while the crystal spike on its chest can be colored a dark, maroon-red. To highlight the beauty of this Pokemon, I would use lighter shades on the edges of his wings and lower legs, as well as a trace of light silver along the edges of his head and wing claws.