The Combine Color textures allows a texture to be multiplied with a color.
Simple Mix texture is called Combine Color texture in all versions until V-Ray version 3.60.
Color/ Texture – Specifies the color or texture that will be multiplied with the texture.
Blend amount – Specifies the amount of blending between the color and texture.
Multiply Result – Multiplies the result.
Invert Result – When enabled, inverts the effect.