striped table border colors

Hello: 

I have a particular style of table I am attempting to generate into PDF using the fo stylesheets. 

Specifically I am getting custom striped rows, but I also need to generate white rowsep/colsep or cell borders. I am trying to do this in my custom layer, and here is a piece of the xsl:

 

<xsl:template name="table.row.properties">

  <xsl:variable name="tabstyle">

    <xsl:call-template name="tabstyle"/>

  </xsl:variable>

   <xsl:variable name="rownum">

    <xsl:number from="tgroup" count="row"/>

  </xsl:variable>

  <xsl:choose>

    <xsl:when test="$tabstyle = 'striped'">

      <xsl:if test="$rownum mod 2 = 0">

        <xsl:attribute name="background-color">#939598</xsl:attribute>

        <!--attributes to change border colors?-->

	<xsl:attribute name="border-right">0.5pt white</xsl:attribute>

        <xsl:attribute name="border-left">0.5pt white</xsl:attribute>

      </xsl:if>

    <xsl:if test="$rownum mod 2 != 0">

      <xsl:attribute name="background-color">#bcbec0</xsl:attribute>

	<!--?attributes to change border colors?-->    

    </xsl:if>

   </xsl:when>

 </xsl:choose>

</xsl:template>

Obviously this is not working, the portions following <!--attributes to change border colors?--> are simply variations of my attempts to get some sort of change to the table.cell.properties, 

however I could not find any sort of combination to get the result I wish for, which would be white colored rules between the cells of the table. 

Is this even possible? Any suggestions?

Thank you for taking the time to read my questions.

/Gregorio