Coloring this image of St. Basil's Cathedral in Moscow, Russia presents a great opportunity for creativity and self-expression. The exterior of the building is richly decorated with different shapes and structured designs; this can be emphasized by adding bold colors, like reds, oranges, purples and blues. The details of the building itself can be highlighted by using lighter, contrasting colors, and to make the windows of the building more eye-catching, one could use different shades of a single color to give an overall effect. To bring the picture together, use silver and gold to add shimmering accents and sparkle to the image. One could also experiment with blending colors in sections to create a unique and interesting vibe. This cathedral is sure to be a stunning masterpiece when fully colored.