color-interpolation

<xs:attribute name="color-interpolation">
  <xs:simpleType>
    <xs:restriction base="xs:token">
      <xs:enumeration value="auto"/>
      <xs:enumeration value="sRGB"/>
      <xs:enumeration value="linearRGB"/>
      <xs:enumeration value="inherit"/>
    </xs:restriction>
  </xs:simpleType>
</xs:attribute>