V-Ray Remap texture is a utility for remapping different types of values. For example, it can remap a single value, three-channel inputs, and colors.
In the example on the right, a V-Ray Remap texture is used in the diffuse color channels of the garland, the gift boxes, and the back wall materials. The texture is also used as the Light Color in the V-Ray Light material of the glowing snowflakes.