http://xml.apache.org/commons/components/external/: xml-commons provides an Apache-hosted set of DOM, SAX, and JAXP interfaces for use in other xml-based projects. Our hope is that we can standardize on both a common version and packaging scheme for these critical XML standards interfaces to make the lives of both our developers and users easier. The External Components portion of xml-commons contains interfaces that are defined by external standards organizations. For DOM, that's the W3C; for SAX it's David Megginson and sax.sourceforge.net; for JAXP it's Sun. 
/*
 * Copyright (c) 2000 World Wide Web Consortium,
 * (Massachusetts Institute of Technology, Institut National de
 * Recherche en Informatique et en Automatique, Keio University). All
 * Rights Reserved. This program is distributed under the W3C's Software
 * Intellectual Property License. This program is distributed in the
 * hope that it will be useful, but WITHOUT ANY WARRANTY; without even
 * the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR
 * PURPOSE.
 * See W3C License http://www.w3.org/Consortium/Legal/ for more details.
 */

package org.w3c.dom.css;


 The RGBColor interface is used to represent any RGB color 
value. This interface reflects the values in the underlying style 
property. Hence, modifications made to the CSSPrimitiveValue 
objects modify the style property. 

 A specified RGB color is not clipped (even if the number is outside the 
range 0-255 or 0%-100%). A computed RGB color is clipped depending on the 
device. 

 Even if a style sheet can only contain an integer for a color value, 
the internal storage of this integer is a float, and this can be used as 
a float in the specified or the computed style. 

 A color percentage value can always be converted to a number and vice 
versa. 

See also the Document Object Model (DOM) Level 2 Style Specification.

Since:DOM Level 2
/**
 *  The <code>RGBColor</code> interface is used to represent any RGB color 
 * value. This interface reflects the values in the underlying style 
 * property. Hence, modifications made to the <code>CSSPrimitiveValue</code> 
 * objects modify the style property. 
 * <p> A specified RGB color is not clipped (even if the number is outside the 
 * range 0-255 or 0%-100%). A computed RGB color is clipped depending on the 
 * device. 
 * <p> Even if a style sheet can only contain an integer for a color value, 
 * the internal storage of this integer is a float, and this can be used as 
 * a float in the specified or the computed style. 
 * <p> A color percentage value can always be converted to a number and vice 
 * versa. 
 * <p>See also the <a href='http://www.w3.org/TR/2000/REC-DOM-Level-2-Style-20001113'>Document Object Model (DOM) Level 2 Style Specification</a>.
 * @since DOM Level 2
 */
public interface RGBColor {
    
 This attribute is used for the red value of the RGB color. 

/**
     *  This attribute is used for the red value of the RGB color. 
     */
    public CSSPrimitiveValue getRed();

    
 This attribute is used for the green value of the RGB color. 

/**
     *  This attribute is used for the green value of the RGB color. 
     */
    public CSSPrimitiveValue getGreen();

    
 This attribute is used for the blue value of the RGB color. 

/**
     *  This attribute is used for the blue value of the RGB color. 
     */
    public CSSPrimitiveValue getBlue();

}