Changing an html colour value

Hi...

Is it possible to change an html colour value coded into the source xml with
xsl?

This appears in the xml:

<td bgcolor="#ffffff">foo</td>

I would like to change the colour value of every instance of this in the
output to #999999.

I imagine that an if / when statement would be used but I am unsure of the
syntax.

Any help would be appreciated.

Thanks

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Aaron Johnson
GUI / XSLT development
Academic Technologies Group [ATG]
University of the West of England

ext: 81051
t: 0117 3281051 
www: http://atg.uwe.ac.uk/aaron
e: aaron2.johnson@xxxxxxxxx
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