<xsd:schema targetNamespace="http://schemas.openxmlformats.org/drawingml/2006/main" elementFormDefault="qualified" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns="http://schemas.openxmlformats.org/drawingml/2006/main">
  <xsd:include schemaLocation="dml-baseStylesheet.xsd" />
  <xsd:complexType name="CT_StyleMatrixReference">
    <xsd:sequence>
      <xsd:group ref="EG_ColorChoice" minOccurs="0" maxOccurs="1" />
    </xsd:sequence>
    <xsd:attribute name="idx" type="ST_StyleMatrixColumnIndex" use="required">
      <xsd:annotation>
        <xsd:documentation>Style Matrix Index</xsd:documentation>
      </xsd:annotation>
    </xsd:attribute>
  </xsd:complexType>
  <xsd:complexType name="CT_FontReference">
    <xsd:sequence>
      <xsd:group ref="EG_ColorChoice" minOccurs="0" maxOccurs="1" />
    </xsd:sequence>
    <xsd:attribute name="idx" type="ST_FontCollectionIndex" use="required">
      <xsd:annotation>
        <xsd:documentation>Identifier</xsd:documentation>
      </xsd:annotation>
    </xsd:attribute>
  </xsd:complexType>
  <xsd:complexType name="CT_ShapeStyle">
    <xsd:sequence>
      <xsd:element name="lnRef" type="CT_StyleMatrixReference" minOccurs="1" maxOccurs="1" />
      <xsd:element name="fillRef" type="CT_StyleMatrixReference" minOccurs="1" maxOccurs="1" />
      <xsd:element name="effectRef" type="CT_StyleMatrixReference" minOccurs="1" maxOccurs="1" />
      <xsd:element name="fontRef" type="CT_FontReference" minOccurs="1" maxOccurs="1">
        <xsd:annotation>
          <xsd:documentation>Font Reference</xsd:documentation>
        </xsd:annotation>
      </xsd:element>
    </xsd:sequence>
  </xsd:complexType>
</xsd:schema>

• CT_FontReference
• CT_ShapeStyle
• CT_StyleMatrixReference