Bug 118998 Background image set in inline items doesn't show up in pdf generated using BIRT PDF emitter.
Description: Background image set in inline items doesn't show up in pdf generated using BIRT PDF emitter. Steps to reproduce: 1. run attached list-data-style-background(attribute).xml file to generate pdf file through birt pdf emitter. 2. view the inline data items with background image setting in pdf file. Expected result: Images show. Actual result: Images didn't show up.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/css/engine/value/AbstractColorManager.java
String ident = pvalue.getStringValue( );
				
				Value v = (Value) computedValues.get( ident );
				if ( v != null )
				{
					return v;
				}
				
				if ( values.get( ident ) == null )
				{
					throw new InternalError( );
				}
				return (Value) engine.getCSSContext( ).getSystemColor( ident );
			}
		}
		return super.computeValue( elt, engine, idx, value );
	}
	/**
	 * Creates an RGB color.
	 */
	protected Value createRGBColor( CSSPrimitiveValue r, CSSPrimitiveValue g,
			CSSPrimitiveValue b )
	{
		return new RGBColorValue( r, g, b );
	}
	/**
	 * Creates a color component from a lexical unit.
	 */
	protected Value createColorComponent( LexicalUnit lu ) throws DOMException
	{