If you created a "flag" for each item that was changed in your onafterchange
event, you could test that condition in a separate template.  Let's say I
have a <tr> tag in my view1.xsl that I want to set the background color for.

<tr style="MIN-HEIGHT: 0.333in">
   <xsl:apply-templates select="my:SomeNodeChangedFlag"
mode="xd:preserve"/>

and your template would look like:

<xsl:template match="my:SomeNodeChangedFlag" mode="xd:preserve">
        <xsl:if test=". = 'true' ">
            <xsl:attribute
name="style">Background-color:red;</xsl:attribute>
        </xsl:if>
</xsl:template>

Ideally, I think these would be best as an attribute, so your data node
would look like:

<my:someNode  hasChanged="true">This content has changed<my:someNode>

Of course, the apply templates would have to select the @hasChanged node.

Regards,
Mike Sharp