<?xml version="1.0" encoding="UTF-8"?>
<xs:schema attributeFormDefault="unqualified"
	elementFormDefault="qualified" xmlns:xs="http://www.w3.org/2001/XMLSchema">
	<xs:element name="values">
		<xs:complexType>
			<xs:sequence>
				<xs:element name="item" maxOccurs="unbounded" minOccurs="0">
					<xs:complexType>
						<xs:sequence>
							<xs:element name="component" maxOccurs="unbounded"
								minOccurs="0">
								<xs:complexType>
									<xs:simpleContent>
										<xs:extension base="xs:string">
											<xs:attribute type="xs:string" name="name" use="required" />
										</xs:extension>
									</xs:simpleContent>
								</xs:complexType>
							</xs:element>
						</xs:sequence>
						<xs:attribute type="xs:string" name="label" use="optional" />
						<xs:attribute name="value" use="required">
							<xs:annotation>
								<xs:documentation>The regular expression in the constraint of
									the "value" attribute is: 1) a valid rgb() expression or 2) a
									valid hex number or 3) a valid alpha expression or 4) a three
									digit hex triple or 5) a valid %rgb() expression.</xs:documentation>
							</xs:annotation>
							<xs:simpleType>
<!-- TODO: Need to modify the last pattern below (%rgb() to accept digits from 0 to 100 instead of from 1 to 99 -->
								<xs:restriction base="xs:string">
									<xs:pattern
										value="rgb\((((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5])),\s?){2}(((\d{1,2})|(1\d{2})|(2[0-4]\d)|(25[0-5]))){1}\)|#(([0-9a-fA-F]){6})|([A-Z,a-z]+)|#([0-9a-fA-F]){3}|rgb\(([1-9][0-9]{0,1}%,\s?){2}([1-9][0-9]{0,1}%)\)">
									</xs:pattern>
								</xs:restriction>
							</xs:simpleType>
						</xs:attribute>
					</xs:complexType>
				</xs:element>
			</xs:sequence>
			<xs:attribute type="xs:string" name="default" use="optional" />
			<xs:attribute type="xs:string" name="label" use="optional" />
		</xs:complexType>
	</xs:element>
</xs:schema>