The object of the present invention is to provide a silicon oxide-coated oxide composition for coating in which color characteristics, particularly reflectivity are controlled, and a method of producing a composition for coating which is used by blending the composition for coating to a paint constituting a coated body in which weather resistance is required. The present invention provides a silicon oxide-coated oxide composition for coating in which weather resistance is required, which comprises silicon oxide-coated oxide particles wherein at least a part of the surface of the oxide particles is coated with silicon oxide, wherein the silicon oxide is amorphous for the purpose of controlling color characteristics of the silicon oxide-coated oxide composition for coating. And the present invention provides a method of producing the composition for coating, wherein color characteristics of the oxide particles are controlled by producing the oxide particles by selecting presence or absence of amorphous silicon oxide covering at least a part of the surface of the oxide particles, and presence or absence of an acetyl group as a functional group contained in the silicon oxide-coated oxide particles.